21531535114010 has 16 divisors (see below), whose sum is σ = 38757104640000. Its totient is φ = 8612538171216.

The previous prime is 21531535113989. The next prime is 21531535114027. The reversal of 21531535114010 is 1041153513512.

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, 8285210 + ... + 10569189.

It is an arithmetic number, because the mean of its divisors is an integer number (2422319040000).

Almost surely, 2^{21531535114010} is an apocalyptic number.

21531535114010 is a deficient number, since it is larger than the sum of its proper divisors (17225569525990).

21531535114010 is a wasteful number, since it uses less digits than its factorization.

21531535114010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18968605.

The product of its (nonzero) digits is 9000, while the sum is 32.

Adding to 21531535114010 its reverse (1041153513512), we get a palindrome (22572688627522).

The spelling of 21531535114010 in words is "twenty-one trillion, five hundred thirty-one billion, five hundred thirty-five million, one hundred fourteen thousand, ten".