3521656111012 has 12 divisors (see below), whose sum is σ = 6636967286236. Its totient is φ = 1625379743520.

The previous prime is 3521656111007. The next prime is 3521656111021. The reversal of 3521656111012 is 2101116561253.

It can be written as a sum of positive squares in 2 ways, for example, as 1267502195556 + 2254153915456 = 1125834^2 + 1501384^2 .

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, 33862077939 + ... + 33862078042.

Almost surely, 2^{3521656111012} is an apocalyptic number.

It is an amenable number.

3521656111012 is a deficient number, since it is larger than the sum of its proper divisors (3115311175224).

3521656111012 is a wasteful number, since it uses less digits than its factorization.

3521656111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67724155998 (or 67724155996 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 3521656111012 in words is "three trillion, five hundred twenty-one billion, six hundred fifty-six million, one hundred eleven thousand, twelve".