121131311213031 has 64 divisors (see below), whose sum is σ = 185670553190400. Its totient is φ = 68810388990336.

The previous prime is 121131311212949. The next prime is 121131311213111. The reversal of 121131311213031 is 130312113131121.

It is not a de Polignac number, because 121131311213031 - 2²² = 121131307018727 is a prime.

It is a super-2 number, since 2×121131311213031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121131311212992 and 121131311213010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121131311223031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17198819596 + ... + 17198826638.

It is an arithmetic number, because the mean of its divisors is an integer number (2901102393600).

Almost surely, 2^{121131311213031} is an apocalyptic number.

121131311213031 is a deficient number, since it is larger than the sum of its proper divisors (64539241977369).

121131311213031 is a wasteful number, since it uses less digits than its factorization.

121131311213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12668.

The product of its (nonzero) digits is 324, while the sum is 24.

Adding to 121131311213031 its reverse (130312113131121), we get a palindrome (251443424344152).

The spelling of 121131311213031 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, three hundred eleven million, two hundred thirteen thousand, thirty-one".