21211010212293 has 12 divisors (see below), whose sum is σ = 33423410031648. Its totient is φ = 12855157704360.

The previous prime is 21211010212211. The next prime is 21211010212361. The reversal of 21211010212293 is 39221201011212.

It is not a de Polignac number, because 21211010212293 - 2²⁰ = 21211009163717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211014212293) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107126314105 + ... + 107126314302.

It is an arithmetic number, because the mean of its divisors is an integer number (2785284169304).

Almost surely, 2^{21211010212293} is an apocalyptic number.

It is an amenable number.

21211010212293 is a deficient number, since it is larger than the sum of its proper divisors (12212399819355).

21211010212293 is a wasteful number, since it uses less digits than its factorization.

21211010212293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214252628424 (or 214252628421 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 21211010212293 in words is "twenty-one trillion, two hundred eleven billion, ten million, two hundred twelve thousand, two hundred ninety-three".