3691221222212 has 12 divisors (see below), whose sum is σ = 6466727855616. Its totient is φ = 1843584692040.

The previous prime is 3691221222167. The next prime is 3691221222253. The reversal of 3691221222212 is 2122221221963.

It is a super-2 number, since 2×3691221222212² (a number of 26 digits) contains 22 as substring.

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, 506475668 + ... + 506482955.

It is an arithmetic number, because the mean of its divisors is an integer number (538893987968).

Almost surely, 2^{3691221222212} is an apocalyptic number.

It is an amenable number.

3691221222212 is a deficient number, since it is larger than the sum of its proper divisors (2775506633404).

3691221222212 is a wasteful number, since it uses less digits than its factorization.

3691221222212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012959538 (or 1012959536 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The spelling of 3691221222212 in words is "three trillion, six hundred ninety-one billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twelve".