21131142013005 has 32 divisors (see below), whose sum is σ = 34901857317888. Its totient is φ = 10905961344000.

The previous prime is 21131142013001. The next prime is 21131142013013. The reversal of 21131142013005 is 50031024113112.

It is not a de Polignac number, because 21131142013005 - 2² = 21131142013001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21131142013001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10944955 + ... + 12730055.

It is an arithmetic number, because the mean of its divisors is an integer number (1090683041184).

Almost surely, 2^{21131142013005} is an apocalyptic number.

It is an amenable number.

21131142013005 is a deficient number, since it is larger than the sum of its proper divisors (13770715304883).

21131142013005 is a wasteful number, since it uses less digits than its factorization.

21131142013005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810597.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 21131142013005 its reverse (50031024113112), we get a palindrome (71162166126117).

The spelling of 21131142013005 in words is "twenty-one trillion, one hundred thirty-one billion, one hundred forty-two million, thirteen thousand, five".