213122012010 has 32 divisors (see below), whose sum is σ = 511534638720. Its totient is φ = 56827891008.

The previous prime is 213122011979. The next prime is 213122012011. The reversal of 213122012010 is 10210221312.

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

It is not an unprimeable number, because it can be changed into a prime (213122012011) 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, 90996 + ... + 659184.

It is an arithmetic number, because the mean of its divisors is an integer number (15985457460).

Almost surely, 2^213122012010 is an apocalyptic number.

213122012010 is an abundant number, since it is smaller than the sum of its proper divisors (298412626710).

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

213122012010 is a wasteful number, since it uses less digits than its factorization.

213122012010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580702.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 213122012010 its reverse (10210221312), we get a palindrome (223332233322).

The spelling of 213122012010 in words is "two hundred thirteen billion, one hundred twenty-two million, twelve thousand, ten".