21022202213430 has 64 divisors (see below), whose sum is σ = 56527513797888. Its totient is φ = 4958553836160.

The previous prime is 21022202213387. The next prime is 21022202213477. The reversal of 21022202213430 is 3431220222012.

It is a self number, because there is not a number n which added to its sum of digits gives 21022202213430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 860847832 + ... + 860872251.

It is an arithmetic number, because the mean of its divisors is an integer number (883242403092).

Almost surely, 2^{21022202213430} is an apocalyptic number.

21022202213430 is an abundant number, since it is smaller than the sum of its proper divisors (35505311584458).

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

21022202213430 is a wasteful number, since it uses less digits than its factorization.

21022202213430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721720141.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21022202213430 its reverse (3431220222012), we get a palindrome (24453422435442).

The spelling of 21022202213430 in words is "twenty-one trillion, twenty-two billion, two hundred two million, two hundred thirteen thousand, four hundred thirty".