215401122330 has 32 divisors (see below), whose sum is σ = 517167937728. Its totient is φ = 57417494400.

The previous prime is 215401122323. The next prime is 215401122337. The reversal of 215401122330 is 33221104512.

It is an interprime number because it is at equal distance from previous prime (215401122323) and next prime (215401122337).

It is a self number, because there is not a number n which added to its sum of digits gives 215401122330.

It is not an unprimeable number, because it can be changed into a prime (215401122337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1348416 + ... + 1499675.

It is an arithmetic number, because the mean of its divisors is an integer number (16161498054).

Almost surely, 2^215401122330 is an apocalyptic number.

215401122330 is an abundant number, since it is smaller than the sum of its proper divisors (301766815398).

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

215401122330 is a wasteful number, since it uses less digits than its factorization.

215401122330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850622.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 215401122330 its reverse (33221104512), we get a palindrome (248622226842).

The spelling of 215401122330 in words is "two hundred fifteen billion, four hundred one million, one hundred twenty-two thousand, three hundred thirty".