921021101002 has 16 divisors (see below), whose sum is σ = 1396699488072. Its totient is φ = 455464339200.

The previous prime is 921021100973. The next prime is 921021101041. The reversal of 921021101002 is 200101120129.

It is a happy number.

921021101002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 800182131841 + 120838969161 = 894529^2 + 347619^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2243763 + ... + 2622310.

Almost surely, 2^921021101002 is an apocalyptic number.

921021101002 is a deficient number, since it is larger than the sum of its proper divisors (475678387070).

921021101002 is a wasteful number, since it uses less digits than its factorization.

921021101002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4867113.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 921021101002 in words is "nine hundred twenty-one billion, twenty-one million, one hundred one thousand, two".