21211010212319 has 8 divisors (see below), whose sum is σ = 21236900244000. Its totient is φ = 21185120914272.

The previous prime is 21211010212211. The next prime is 21211010212361. The reversal of 21211010212319 is 91321201011212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21211010212319 is a prime.

It is a super-2 number, since 2×21211010212319² (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 (21211010218319) 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, 77880422 + ... + 78152300.

It is an arithmetic number, because the mean of its divisors is an integer number (2654612530500).

Almost surely, 2^{21211010212319} is an apocalyptic number.

21211010212319 is a deficient number, since it is larger than the sum of its proper divisors (25890031681).

21211010212319 is an equidigital number, since it uses as much as digits as its factorization.

21211010212319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366817.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 21211010212319 in words is "twenty-one trillion, two hundred eleven billion, ten million, two hundred twelve thousand, three hundred nineteen".