21101232310212 has 24 divisors (see below), whose sum is σ = 49298770637536. Its totient is φ = 7024806687168.

The previous prime is 21101232310201. The next prime is 21101232310217. The reversal of 21101232310212 is 21201323210112.

It is not an unprimeable number, because it can be changed into a prime (21101232310217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1117167193 + ... + 1117186080.

Almost surely, 2^{21101232310212} is an apocalyptic number.

It is an amenable number.

21101232310212 is an abundant number, since it is smaller than the sum of its proper divisors (28197538327324).

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

21101232310212 is a wasteful number, since it uses less digits than its factorization.

21101232310212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234354067 (or 2234354065 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21101232310212 its reverse (21201323210112), we get a palindrome (42302555520324).

The spelling of 21101232310212 in words is "twenty-one trillion, one hundred one billion, two hundred thirty-two million, three hundred ten thousand, two hundred twelve".