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1220110022 = 2610055011
BaseRepresentation
bin100100010111001…
…0110011011000110
310011000212000022002
41020232112123012
54444322010042
6321023105302
742143523035
oct11056263306
93130760262
101220110022
115767a179a
122a0742232
13165a159c1
14b808671c
15721ae132
hex48b966c6

1220110022 has 4 divisors (see below), whose sum is σ = 1830165036. Its totient is φ = 610055010.

The previous prime is 1220110013. The next prime is 1220110033. The reversal of 1220110022 is 2200110221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2200110221 = 2689818189.

It is a junction number, because it is equal to n+sod(n) for n = 1220109985 and 1220110012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305027504 + ... + 305027507.

It is an arithmetic number, because the mean of its divisors is an integer number (457541259).

Almost surely, 21220110022 is an apocalyptic number.

1220110022 is a deficient number, since it is larger than the sum of its proper divisors (610055014).

1220110022 is an equidigital number, since it uses as much as digits as its factorization.

1220110022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610055013.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1220110022 is about 34930.0733179878. The cubic root of 1220110022 is about 1068.5618498877.

Adding to 1220110022 its reverse (2200110221), we get a palindrome (3420220243).

The spelling of 1220110022 in words is "one billion, two hundred twenty million, one hundred ten thousand, twenty-two".

Divisors: 1 2 610055011 1220110022