121022020023 has 4 divisors (see below), whose sum is σ = 161362693368. Its totient is φ = 80681346680.

The previous prime is 121022020013. The next prime is 121022020087. The reversal of 121022020023 is 320020220121.

It is a happy number.

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 121022020023 - 2²⁴ = 121005242807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121022019984 and 121022020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022020013) 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, 20170336668 + ... + 20170336673.

It is an arithmetic number, because the mean of its divisors is an integer number (40340673342).

Almost surely, 2^121022020023 is an apocalyptic number.

121022020023 is a deficient number, since it is larger than the sum of its proper divisors (40340673345).

121022020023 is an equidigital number, since it uses as much as digits as its factorization.

121022020023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40340673344.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 121022020023 its reverse (320020220121), we get a palindrome (441042240144).

The spelling of 121022020023 in words is "one hundred twenty-one billion, twenty-two million, twenty thousand, twenty-three".