13101121031021 has 2 divisors, whose sum is σ = 13101121031022. Its totient is φ = 13101121031020.

The previous prime is 13101121030951. The next prime is 13101121031039. The reversal of 13101121031021 is 12013012110131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12986033860996 + 115087170025 = 3603614^2 + 339245^2 .

It is an emirp because it is prime and its reverse (12013012110131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13101121031021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13101121031081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6550560515510 + 6550560515511.

It is an arithmetic number, because the mean of its divisors is an integer number (6550560515511).

Almost surely, 2^{13101121031021} is an apocalyptic number.

It is an amenable number.

13101121031021 is a deficient number, since it is larger than the sum of its proper divisors (1).

13101121031021 is an equidigital number, since it uses as much as digits as its factorization.

13101121031021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 13101121031021 its reverse (12013012110131), we get a palindrome (25114133141152).

The spelling of 13101121031021 in words is "thirteen trillion, one hundred one billion, one hundred twenty-one million, thirty-one thousand, twenty-one".