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12111111202 = 217356209153
BaseRepresentation
bin10110100011110000…
…01110010000100010
31011021001012012021011
423101320032100202
5144300421024302
65321435051134
7606060514051
oct132170162042
934231165234
1012111111202
115155452113
12241bba0aaa
1311b01988b8
1482c6a2398
154ad3bc5d7
hex2d1e0e422

12111111202 has 8 divisors (see below), whose sum is σ = 19235294316. Its totient is φ = 5699346432.

The previous prime is 12111111197. The next prime is 12111111211. The reversal of 12111111202 is 20211111121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11218834561 + 892276641 = 105919^2 + 29871^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178104543 + ... + 178104610.

Almost surely, 212111111202 is an apocalyptic number.

12111111202 is a deficient number, since it is larger than the sum of its proper divisors (7124183114).

12111111202 is a wasteful number, since it uses less digits than its factorization.

12111111202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356209172.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12111111202 its reverse (20211111121), we get a palindrome (32322222323).

The spelling of 12111111202 in words is "twelve billion, one hundred eleven million, one hundred eleven thousand, two hundred two".

Divisors: 1 2 17 34 356209153 712418306 6055555601 12111111202