101212013131 has 4 divisors (see below), whose sum is σ = 101231682552. Its totient is φ = 101192343712.

The previous prime is 101212013113. The next prime is 101212013137. The reversal of 101212013131 is 131310212101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131310212101 = 65557 ⋅2002993.

It is a cyclic number.

It is not a de Polignac number, because 101212013131 - 2³¹ = 99064529483 is a prime.

It is a super-2 number, since 2×101212013131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101212013137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9826990 + ... + 9837283.

It is an arithmetic number, because the mean of its divisors is an integer number (25307920638).

Almost surely, 2^101212013131 is an apocalyptic number.

101212013131 is a deficient number, since it is larger than the sum of its proper divisors (19669421).

101212013131 is an equidigital number, since it uses as much as digits as its factorization.

101212013131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19669420.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 101212013131 its reverse (131310212101), we get a palindrome (232522225232).

The spelling of 101212013131 in words is "one hundred one billion, two hundred twelve million, thirteen thousand, one hundred thirty-one".