21012302221293 has 16 divisors (see below), whose sum is σ = 28042193177856. Its totient is φ = 13995307010880.

The previous prime is 21012302221271. The next prime is 21012302221303. The reversal of 21012302221293 is 39212220321012.

It is not a de Polignac number, because 21012302221293 - 2¹⁸ = 21012301959149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21012302221293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012302221193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260067580 + ... + 260148362.

It is an arithmetic number, because the mean of its divisors is an integer number (1752637073616).

Almost surely, 2^{21012302221293} is an apocalyptic number.

It is an amenable number.

21012302221293 is a deficient number, since it is larger than the sum of its proper divisors (7029890956563).

21012302221293 is a wasteful number, since it uses less digits than its factorization.

21012302221293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159524.

The product of its (nonzero) digits is 5184, while the sum is 30.

The spelling of 21012302221293 in words is "twenty-one trillion, twelve billion, three hundred two million, two hundred twenty-one thousand, two hundred ninety-three".