21212113113319 has 24 divisors (see below), whose sum is σ = 22555121685408. Its totient is φ = 19945002969600.

The previous prime is 21212113113311. The next prime is 21212113113343. The reversal of 21212113113319 is 91331131121212.

It is not a de Polignac number, because 21212113113319 - 2³ = 21212113113311 is a prime.

It is a super-2 number, since 2×21212113113319² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212113113311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1470707142 + ... + 1470721564.

It is an arithmetic number, because the mean of its divisors is an integer number (939796736892).

Almost surely, 2^{21212113113319} is an apocalyptic number.

21212113113319 is a deficient number, since it is larger than the sum of its proper divisors (1343008572089).

21212113113319 is a wasteful number, since it uses less digits than its factorization.

21212113113319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19035 (or 19018 counting only the distinct ones).

The product of its digits is 1944, while the sum is 31.

The spelling of 21212113113319 in words is "twenty-one trillion, two hundred twelve billion, one hundred thirteen million, one hundred thirteen thousand, three hundred nineteen".