121022220121 has 8 divisors (see below), whose sum is σ = 132324984000. Its totient is φ = 109769580240.

The previous prime is 121022220107. The next prime is 121022220139.

It is a happy number.

121022220121 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121022220121 - 2³⁵ = 86662481753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121022220095 and 121022220104.

It is not an unprimeable number, because it can be changed into a prime (121022220161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12525946 + ... + 12535603.

It is an arithmetic number, because the mean of its divisors is an integer number (16540623000).

Almost surely, 2^121022220121 is an apocalyptic number.

121022220121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121022220121 is a deficient number, since it is larger than the sum of its proper divisors (11302763879).

121022220121 is a wasteful number, since it uses less digits than its factorization.

121022220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25061999.

The product of its (nonzero) digits is 64, while the sum is 16.

It can be divided in two parts, 121022 and 220121, that added together give a palindrome (341143).

The spelling of 121022220121 in words is "one hundred twenty-one billion, twenty-two million, two hundred twenty thousand, one hundred twenty-one".