53521210103121 has 6 divisors (see below), whose sum is σ = 77308414593410. Its totient is φ = 35680806735408.

The previous prime is 53521210103087. The next prime is 53521210103161. The reversal of 53521210103121 is 12130101212535.

53521210103121 is a `hidden beast` number, since 5 + 3 + 521 + 2 + 1 + 0 + 10 + 3 + 121 = 666.

It can be written as a sum of positive squares in only one way, i.e., 46237769626896 + 7283440476225 = 6799836^2 + 2698785^2 .

It is not a de Polignac number, because 53521210103121 - 2⁶ = 53521210103057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53521210103161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2973400561276 + ... + 2973400561293.

Almost surely, 2^{53521210103121} is an apocalyptic number.

It is an amenable number.

53521210103121 is a deficient number, since it is larger than the sum of its proper divisors (23787204490289).

53521210103121 is a wasteful number, since it uses less digits than its factorization.

53521210103121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5946801122575 (or 5946801122572 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 53521210103121 its reverse (12130101212535), we get a palindrome (65651311315656).

The spelling of 53521210103121 in words is "fifty-three trillion, five hundred twenty-one billion, two hundred ten million, one hundred three thousand, one hundred twenty-one".