21312041211042 has 32 divisors (see below), whose sum is σ = 43436962981440. Its totient is φ = 6968587055040.

The previous prime is 21312041210951. The next prime is 21312041211073. The reversal of 21312041211042 is 24011214021312.

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, 5077192 + ... + 8270547.

It is an arithmetic number, because the mean of its divisors is an integer number (1357405093170).

Almost surely, 2^{21312041211042} is an apocalyptic number.

21312041211042 is an abundant number, since it is smaller than the sum of its proper divisors (22124921770398).

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

21312041211042 is a wasteful number, since it uses less digits than its factorization.

21312041211042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13352818.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 21312041211042 its reverse (24011214021312), we get a palindrome (45323255232354).

The spelling of 21312041211042 in words is "twenty-one trillion, three hundred twelve billion, forty-one million, two hundred eleven thousand, forty-two".