21030152331144 has 64 divisors (see below), whose sum is σ = 57358194647040. Its totient is φ = 6372414128960.

The previous prime is 21030152331131. The next prime is 21030152331151. The reversal of 21030152331144 is 44113325103012.

It is a super-2 number, since 2×21030152331144² (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 15 ways as a sum of consecutive naturals, for example, 2464297 + ... + 6937799.

It is an arithmetic number, because the mean of its divisors is an integer number (896221791360).

Almost surely, 2^{21030152331144} is an apocalyptic number.

21030152331144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21030152331144 is an abundant number, since it is smaller than the sum of its proper divisors (36328042315896).

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

21030152331144 is a wasteful number, since it uses less digits than its factorization.

21030152331144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4491330 (or 4491326 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 21030152331144 its reverse (44113325103012), we get a palindrome (65143477434156).

The spelling of 21030152331144 in words is "twenty-one trillion, thirty billion, one hundred fifty-two million, three hundred thirty-one thousand, one hundred forty-four".