21302131012120 has 64 divisors (see below), whose sum is σ = 56543905382400. Its totient is φ = 7067988167040.

The previous prime is 21302131012103. The next prime is 21302131012153. The reversal of 21302131012120 is 2121013120312.

It is a super-3 number, since 3×21302131012120³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1227072600 + ... + 1227089959.

It is an arithmetic number, because the mean of its divisors is an integer number (883498521600).

Almost surely, 2^{21302131012120} is an apocalyptic number.

21302131012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21302131012120 is an abundant number, since it is smaller than the sum of its proper divisors (35241774370280).

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

21302131012120 is a wasteful number, since it uses less digits than its factorization.

21302131012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454162608 (or 2454162604 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21302131012120 its reverse (2121013120312), we get a palindrome (23423144132432).

The spelling of 21302131012120 in words is "twenty-one trillion, three hundred two billion, one hundred thirty-one million, twelve thousand, one hundred twenty".