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1222102133 = 7174586019
BaseRepresentation
bin100100011010111…
…1100110001110101
310011011121012221222
41020311330301311
510000324232013
6321133520125
742166460660
oct11065746165
93134535858
101222102133
1157793246a
122a1343045
13166262675
14b84446d7
1572454508
hex48d7cc75

1222102133 has 4 divisors (see below), whose sum is σ = 1396688160. Its totient is φ = 1047516108.

The previous prime is 1222102111. The next prime is 1222102139. The reversal of 1222102133 is 3312012221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3312012221 = 7473144603.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1222102133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222102139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87293003 + ... + 87293016.

It is an arithmetic number, because the mean of its divisors is an integer number (349172040).

Almost surely, 21222102133 is an apocalyptic number.

It is an amenable number.

1222102133 is a deficient number, since it is larger than the sum of its proper divisors (174586027).

1222102133 is an equidigital number, since it uses as much as digits as its factorization.

1222102133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174586026.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1222102133 is about 34958.5773881032. The cubic root of 1222102133 is about 1069.1430915514.

Adding to 1222102133 its reverse (3312012221), we get a palindrome (4534114354).

The spelling of 1222102133 in words is "one billion, two hundred twenty-two million, one hundred two thousand, one hundred thirty-three".

Divisors: 1 7 174586019 1222102133