21012122202000 has 160 divisors (see below), whose sum is σ = 70079050903680. Its totient is φ = 5410017625600.

The previous prime is 21012122201999. The next prime is 21012122202031. The reversal of 21012122202000 is 20222121012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60205662 + ... + 60553661.

It is an arithmetic number, because the mean of its divisors is an integer number (437994068148).

Almost surely, 2^{21012122202000} is an apocalyptic number.

21012122202000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21012122202000 is an abundant number, since it is smaller than the sum of its proper divisors (49066928701680).

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

21012122202000 is a wasteful number, since it uses less digits than its factorization.

21012122202000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120759378 (or 120759362 counting only the distinct ones).

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

Adding to 21012122202000 its reverse (20222121012), we get a palindrome (21032344323012).

The spelling of 21012122202000 in words is "twenty-one trillion, twelve billion, one hundred twenty-two million, two hundred two thousand".