21030213133220 has 24 divisors (see below), whose sum is σ = 45103095402624. Its totient is φ = 8233104715616.

The previous prime is 21030213133211. The next prime is 21030213133261. The reversal of 21030213133220 is 2233131203012.

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, 11186282642 + ... + 11186284521.

It is an arithmetic number, because the mean of its divisors is an integer number (1879295641776).

Almost surely, 2^{21030213133220} is an apocalyptic number.

21030213133220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21030213133220 is an abundant number, since it is smaller than the sum of its proper divisors (24072882269404).

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

21030213133220 is a wasteful number, since it uses less digits than its factorization.

21030213133220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22372567219 (or 22372567217 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 21030213133220 its reverse (2233131203012), we get a palindrome (23263344336232).

The spelling of 21030213133220 in words is "twenty-one trillion, thirty billion, two hundred thirteen million, one hundred thirty-three thousand, two hundred twenty".