121022221013 has 4 divisors (see below), whose sum is σ = 121023778368. Its totient is φ = 121020663660.

The previous prime is 121022220997. The next prime is 121022221027. The reversal of 121022221013 is 310122220121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121022221013 - 2⁴ = 121022220997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121022220982 and 121022221000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022221513) 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, 655631 + ... + 819692.

It is an arithmetic number, because the mean of its divisors is an integer number (30255944592).

Almost surely, 2^121022221013 is an apocalyptic number.

It is an amenable number.

121022221013 is a deficient number, since it is larger than the sum of its proper divisors (1557355).

121022221013 is an equidigital number, since it uses as much as digits as its factorization.

121022221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557354.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 121022221013 its reverse (310122220121), we get a palindrome (431144441134).

The spelling of 121022221013 in words is "one hundred twenty-one billion, twenty-two million, two hundred twenty-one thousand, thirteen".