921221010212002 has 16 divisors (see below), whose sum is σ = 1422647962848000. Its totient is φ = 447117931164960.

The previous prime is 921221010211933. The next prime is 921221010212003. The reversal of 921221010212002 is 200212010122129.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (921221010212003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28227125802 + ... + 28227158437.

It is an arithmetic number, because the mean of its divisors is an integer number (88915497678000).

Almost surely, 2^{921221010212002} is an apocalyptic number.

921221010212002 is a deficient number, since it is larger than the sum of its proper divisors (501426952635998).

921221010212002 is a wasteful number, since it uses less digits than its factorization.

921221010212002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56454284481.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 921221010212002 in words is "nine hundred twenty-one trillion, two hundred twenty-one billion, ten million, two hundred twelve thousand, two".