21312030141140 has 12 divisors (see below), whose sum is σ = 44755263296436. Its totient is φ = 8524812056448.

The previous prime is 21312030141139. The next prime is 21312030141187. The reversal of 21312030141140 is 4114103021312.

It can be written as a sum of positive squares in 2 ways, for example, as 11631182844304 + 9680847296836 = 3410452^2 + 3111406^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532800753509 + ... + 532800753548.

It is an arithmetic number, because the mean of its divisors is an integer number (3729605274703).

Almost surely, 2^{21312030141140} is an apocalyptic number.

21312030141140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21312030141140 is an abundant number, since it is smaller than the sum of its proper divisors (23443233155296).

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

21312030141140 is a wasteful number, since it uses less digits than its factorization.

21312030141140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065601507066 (or 1065601507064 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 21312030141140 its reverse (4114103021312), we get a palindrome (25426133162452).

The spelling of 21312030141140 in words is "twenty-one trillion, three hundred twelve billion, thirty million, one hundred forty-one thousand, one hundred forty".