21122013030 has 32 divisors (see below), whose sum is σ = 50796958464. Its totient is φ = 5620967136.

The previous prime is 21122013019. The next prime is 21122013061. The reversal of 21122013030 is 3031022112.

It is a super-2 number, since 2×21122013030² (a number of 21 digits) contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 708252 + ... + 737471.

It is an arithmetic number, because the mean of its divisors is an integer number (1587404952).

Almost surely, 2^21122013030 is an apocalyptic number.

21122013030 is an abundant number, since it is smaller than the sum of its proper divisors (29674945434).

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

21122013030 is a wasteful number, since it uses less digits than its factorization.

21122013030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446220.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21122013030 its reverse (3031022112), we get a palindrome (24153035142).

The spelling of 21122013030 in words is "twenty-one billion, one hundred twenty-two million, thirteen thousand, thirty".