21140312430332 has 6 divisors (see below), whose sum is σ = 36995546753088. Its totient is φ = 10570156215164.

The previous prime is 21140312430319. The next prime is 21140312430343. The reversal of 21140312430332 is 23303421304112.

It is a junction number, because it is equal to n+sod(n) for n = 21140312430295 and 21140312430304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2642539053788 + ... + 2642539053795.

It is an arithmetic number, because the mean of its divisors is an integer number (6165924458848).

Almost surely, 2^{21140312430332} is an apocalyptic number.

It is an amenable number.

21140312430332 is a deficient number, since it is larger than the sum of its proper divisors (15855234322756).

21140312430332 is a wasteful number, since it uses less digits than its factorization.

21140312430332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5285078107587 (or 5285078107585 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 21140312430332 its reverse (23303421304112), we get a palindrome (44443733734444).

The spelling of 21140312430332 in words is "twenty-one trillion, one hundred forty billion, three hundred twelve million, four hundred thirty thousand, three hundred thirty-two".