21313101001212 has 96 divisors (see below), whose sum is σ = 55352780313600. Its totient is φ = 7091952973056.

The previous prime is 21313101001201. The next prime is 21313101001249. The reversal of 21313101001212 is 21210010131312.

21313101001212 is a `hidden beast` number, since 2 + 131 + 310 + 10 + 0 + 1 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 331415853 + ... + 331480155.

It is an arithmetic number, because the mean of its divisors is an integer number (576591461600).

Almost surely, 2^{21313101001212} is an apocalyptic number.

It is an amenable number.

21313101001212 is an abundant number, since it is smaller than the sum of its proper divisors (34039679312388).

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

21313101001212 is a wasteful number, since it uses less digits than its factorization.

21313101001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69632 (or 69624 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21313101001212 its reverse (21210010131312), we get a palindrome (42523111132524).

The spelling of 21313101001212 in words is "twenty-one trillion, three hundred thirteen billion, one hundred one million, one thousand, two hundred twelve".