101211121131 has 4 divisors (see below), whose sum is σ = 134948161512. Its totient is φ = 67474080752.

The previous prime is 101211121117. The next prime is 101211121153. The reversal of 101211121131 is 131121112101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101211121131 - 2²³ = 101202732523 is a prime.

It is a super-2 number, since 2×101211121131² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101211121131.

It is not an unprimeable number, because it can be changed into a prime (101211125131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16868520186 + ... + 16868520191.

It is an arithmetic number, because the mean of its divisors is an integer number (33737040378).

Almost surely, 2^101211121131 is an apocalyptic number.

101211121131 is a deficient number, since it is larger than the sum of its proper divisors (33737040381).

101211121131 is an equidigital number, since it uses as much as digits as its factorization.

101211121131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33737040380.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 101211121131 its reverse (131121112101), we get a palindrome (232332233232).

The spelling of 101211121131 in words is "one hundred one billion, two hundred eleven million, one hundred twenty-one thousand, one hundred thirty-one".