21140525140330 has 16 divisors (see below), whose sum is σ = 38053029272544. Its totient is φ = 8456191385040.

The previous prime is 21140525140313. The next prime is 21140525140439. The reversal of 21140525140330 is 3304152504112.

It is a junction number, because it is equal to n+sod(n) for n = 21140525140292 and 21140525140301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3002665 + ... + 7162195.

It is an arithmetic number, because the mean of its divisors is an integer number (2378314329534).

Almost surely, 2^{21140525140330} is an apocalyptic number.

21140525140330 is a deficient number, since it is larger than the sum of its proper divisors (16912504132214).

21140525140330 is a wasteful number, since it uses less digits than its factorization.

21140525140330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4667781.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 21140525140330 its reverse (3304152504112), we get a palindrome (24444677644442).

The spelling of 21140525140330 in words is "twenty-one trillion, one hundred forty billion, five hundred twenty-five million, one hundred forty thousand, three hundred thirty".