121122021231 has 12 divisors (see below), whose sum is σ = 177418172880. Its totient is φ = 79610717760.

The previous prime is 121122021193. The next prime is 121122021271. The reversal of 121122021231 is 132120221121.

121122021231 is a `hidden beast` number, since 1 + 211 + 220 + 2 + 1 + 231 = 666.

It is not a de Polignac number, because 121122021231 - 2¹⁴ = 121122004847 is a prime.

It is a super-2 number, since 2×121122021231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122021271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94774026 + ... + 94775303.

It is an arithmetic number, because the mean of its divisors is an integer number (14784847740).

Almost surely, 2^121122021231 is an apocalyptic number.

121122021231 is a deficient number, since it is larger than the sum of its proper divisors (56296151649).

121122021231 is a wasteful number, since it uses less digits than its factorization.

121122021231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189549406 (or 189549403 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121122021231 its reverse (132120221121), we get a palindrome (253242242352).

The spelling of 121122021231 in words is "one hundred twenty-one billion, one hundred twenty-two million, twenty-one thousand, two hundred thirty-one".