21130122000 has 160 divisors (see below), whose sum is σ = 73364054400. Its totient is φ = 5201241600.

The previous prime is 21130121963. The next prime is 21130122019. The reversal of 21130122000 is 22103112.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 57450 + ... + 213449.

It is an arithmetic number, because the mean of its divisors is an integer number (458525340).

Almost surely, 2^21130122000 is an apocalyptic number.

21130122000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21130122000 is an abundant number, since it is smaller than the sum of its proper divisors (52233932400).

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

21130122000 is a wasteful number, since it uses less digits than its factorization.

21130122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270938 (or 270922 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21130122000 its reverse (22103112), we get a palindrome (21152225112).

The spelling of 21130122000 in words is "twenty-one billion, one hundred thirty million, one hundred twenty-two thousand".