10121002531 has 2 divisors, whose sum is σ = 10121002532. Its totient is φ = 10121002530.

The previous prime is 10121002519. The next prime is 10121002553. The reversal of 10121002531 is 13520012101.

It is a weak prime.

It is an emirp because it is prime and its reverse (13520012101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10121002531 - 2¹⁷ = 10120871459 is a prime.

It is a super-2 number, since 2×10121002531² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10121002571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060501265 + 5060501266.

It is an arithmetic number, because the mean of its divisors is an integer number (5060501266).

Almost surely, 2^10121002531 is an apocalyptic number.

10121002531 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121002531 is an equidigital number, since it uses as much as digits as its factorization.

10121002531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 16.

Adding to 10121002531 its reverse (13520012101), we get a palindrome (23641014632).

The spelling of 10121002531 in words is "ten billion, one hundred twenty-one million, two thousand, five hundred thirty-one".