101131211121 has 4 divisors (see below), whose sum is σ = 134841614832. Its totient is φ = 67420807412.

The previous prime is 101131211119. The next prime is 101131211179. The reversal of 101131211121 is 121112131101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101131211121 - 2¹ = 101131211119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101131211121.

It is not an unprimeable number, because it can be changed into a prime (101131211921) 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, 16855201851 + ... + 16855201856.

It is an arithmetic number, because the mean of its divisors is an integer number (33710403708).

Almost surely, 2^101131211121 is an apocalyptic number.

It is an amenable number.

101131211121 is a deficient number, since it is larger than the sum of its proper divisors (33710403711).

101131211121 is an equidigital number, since it uses as much as digits as its factorization.

101131211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33710403710.

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

Adding to 101131211121 its reverse (121112131101), we get a palindrome (222243342222).

The spelling of 101131211121 in words is "one hundred one billion, one hundred thirty-one million, two hundred eleven thousand, one hundred twenty-one".