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1222970111 = 11218115581
BaseRepresentation
bin100100011100101…
…0000101011111111
310011020020022121022
41020321100223333
510001040020421
6321204254355
742210034346
oct11071205377
93136208538
101222970111
11578375600
122a16a13bb
131664a776c
14b85ccb5d
15725767ab
hex48e50aff

1222970111 has 12 divisors (see below), whose sum is σ = 1345239672. Its totient is φ = 1110978000.

The previous prime is 1222970087. The next prime is 1222970117. The reversal of 1222970111 is 1110792221.

It is not a de Polignac number, because 1222970111 - 214 = 1222953727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222970117) 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 11 ways as a sum of consecutive naturals, for example, 216341 + ... + 221921.

It is an arithmetic number, because the mean of its divisors is an integer number (112103306).

Almost surely, 21222970111 is an apocalyptic number.

1222970111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1222970111 is a deficient number, since it is larger than the sum of its proper divisors (122269561).

1222970111 is a wasteful number, since it uses less digits than its factorization.

1222970111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7414 (or 7403 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1222970111 is about 34970.9895627790. The cubic root of 1222970111 is about 1069.3961454347.

The spelling of 1222970111 in words is "one billion, two hundred twenty-two million, nine hundred seventy thousand, one hundred eleven".

Divisors: 1 11 121 1811 5581 19921 61391 219131 675301 10107191 111179101 1222970111