3902121222212 has 72 divisors (see below), whose sum is σ = 7214153072280. Its totient is φ = 1846507829760.

The previous prime is 3902121222193. The next prime is 3902121222221. The reversal of 3902121222212 is 2122221212093.

It can be written as a sum of positive squares in 4 ways, for example, as 2033607194116 + 1868514028096 = 1426046^2 + 1366936^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169050512 + ... + 169073592.

Almost surely, 2^{3902121222212} is an apocalyptic number.

It is an amenable number.

3902121222212 is a deficient number, since it is larger than the sum of its proper divisors (3312031850068).

3902121222212 is a wasteful number, since it uses less digits than its factorization.

3902121222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23973 (or 23948 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 3902121222212 in words is "three trillion, nine hundred two billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred twelve".