21353244235312 has 40 divisors (see below), whose sum is σ = 45403251005952. Its totient is φ = 9647900212800.

The previous prime is 21353244235289. The next prime is 21353244235381.

21353244235312 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21353244235312² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363219864 + ... + 363278647.

Almost surely, 2^{21353244235312} is an apocalyptic number.

21353244235312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21353244235312 is an abundant number, since it is smaller than the sum of its proper divisors (24050006770640).

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

21353244235312 is a wasteful number, since it uses less digits than its factorization.

21353244235312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726498697 (or 726498691 counting only the distinct ones).

The product of its digits is 518400, while the sum is 40.

The spelling of 21353244235312 in words is "twenty-one trillion, three hundred fifty-three billion, two hundred forty-four million, two hundred thirty-five thousand, three hundred twelve".