121022122021 has 4 divisors (see below), whose sum is σ = 121028044032. Its totient is φ = 121016200012.

The previous prime is 121022121977. The next prime is 121022122061. The reversal of 121022122021 is 120221220121.

It is a happy number.

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 121022122021 - 2⁹ = 121022121509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121022121986 and 121022122004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022122061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2930245 + ... + 2971258.

It is an arithmetic number, because the mean of its divisors is an integer number (30257011008).

Almost surely, 2^121022122021 is an apocalyptic number.

It is an amenable number.

121022122021 is a deficient number, since it is larger than the sum of its proper divisors (5922011).

121022122021 is an equidigital number, since it uses as much as digits as its factorization.

121022122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5922010.

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

Adding to 121022122021 its reverse (120221220121), we get a palindrome (241243342142).

The spelling of 121022122021 in words is "one hundred twenty-one billion, twenty-two million, one hundred twenty-two thousand, twenty-one".