121222312122031 has 4 divisors (see below), whose sum is σ = 122929668630864. Its totient is φ = 119514955613200.

The previous prime is 121222312121983. The next prime is 121222312122061. The reversal of 121222312122031 is 130221213222121.

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 121222312122031 - 2³⁷ = 121084873168559 is a prime.

It is a super-2 number, since 2×121222312122031² (a number of 29 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 = 121222312121987 and 121222312122005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222312122061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 853678254310 + ... + 853678254451.

It is an arithmetic number, because the mean of its divisors is an integer number (30732417157716).

Almost surely, 2^{121222312122031} is an apocalyptic number.

121222312122031 is a deficient number, since it is larger than the sum of its proper divisors (1707356508833).

121222312122031 is an equidigital number, since it uses as much as digits as its factorization.

121222312122031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707356508832.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 121222312122031 its reverse (130221213222121), we get a palindrome (251443525344152).

The spelling of 121222312122031 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, three hundred twelve million, one hundred twenty-two thousand, thirty-one".