21120331410 has 96 divisors (see below), whose sum is σ = 59796360000. Its totient is φ = 5151662208.

The previous prime is 21120331373. The next prime is 21120331423. The reversal of 21120331410 is 1413302112.

21120331410 is a `hidden beast` number, since 21 + 1 + 203 + 31 + 410 = 666.

It is a super-3 number, since 3×21120331410³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163360 + ... + 262539.

It is an arithmetic number, because the mean of its divisors is an integer number (622878750).

Almost surely, 2^21120331410 is an apocalyptic number.

21120331410 is an abundant number, since it is smaller than the sum of its proper divisors (38676028590).

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

21120331410 is a wasteful number, since it uses less digits than its factorization.

21120331410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425960 (or 425957 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21120331410 its reverse (1413302112), we get a palindrome (22533633522).

The spelling of 21120331410 in words is "twenty-one billion, one hundred twenty million, three hundred thirty-one thousand, four hundred ten".