921221000200012 has 6 divisors (see below), whose sum is σ = 1612136750350028. Its totient is φ = 460610500100004.

The previous prime is 921221000200001. The next prime is 921221000200013. The reversal of 921221000200012 is 210002000122129.

It is not an unprimeable number, because it can be changed into a prime (921221000200013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115152625024998 + ... + 115152625025005.

Almost surely, 2^{921221000200012} is an apocalyptic number.

It is an amenable number.

921221000200012 is a deficient number, since it is larger than the sum of its proper divisors (690915750150016).

921221000200012 is a wasteful number, since it uses less digits than its factorization.

921221000200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230305250050007 (or 230305250050005 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 921221000200012 in words is "nine hundred twenty-one trillion, two hundred twenty-one billion, two hundred thousand, twelve".