121322331031 has 4 divisors (see below), whose sum is σ = 132351633864. Its totient is φ = 110293028200.

The previous prime is 121322331023. The next prime is 121322331041. The reversal of 121322331031 is 130133223121.

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 121322331031 - 2³ = 121322331023 is a prime.

It is a super-2 number, since 2×121322331031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121322330993 and 121322331011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121322331041) 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, 5514651400 + ... + 5514651421.

It is an arithmetic number, because the mean of its divisors is an integer number (33087908466).

Almost surely, 2^121322331031 is an apocalyptic number.

121322331031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121322331031 is a deficient number, since it is larger than the sum of its proper divisors (11029302833).

121322331031 is a wasteful number, since it uses less digits than its factorization.

121322331031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11029302832.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 121322331031 its reverse (130133223121), we get a palindrome (251455554152).

The spelling of 121322331031 in words is "one hundred twenty-one billion, three hundred twenty-two million, three hundred thirty-one thousand, thirty-one".