21120202021002 has 16 divisors (see below), whose sum is σ = 48274747476672. Its totient is φ = 6034343434560.

The previous prime is 21120202020989. The next prime is 21120202021013. The reversal of 21120202021002 is 20012020202112.

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, 251430976399 + ... + 251430976482.

It is an arithmetic number, because the mean of its divisors is an integer number (3017171717292).

Almost surely, 2^{21120202021002} is an apocalyptic number.

21120202021002 is an abundant number, since it is smaller than the sum of its proper divisors (27154545455670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21120202021002 is a wasteful number, since it uses less digits than its factorization.

21120202021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502861952893.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21120202021002 its reverse (20012020202112), we get a palindrome (41132222223114).

The spelling of 21120202021002 in words is "twenty-one trillion, one hundred twenty billion, two hundred two million, twenty-one thousand, two".