121233022021 has 4 divisors (see below), whose sum is σ = 121236489472. Its totient is φ = 121229554572.

The previous prime is 121233021991. The next prime is 121233022039. The reversal of 121233022021 is 120220332121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120220332121 = 197 ⋅610255493.

It is a cyclic number.

It is not a de Polignac number, because 121233022021 - 2¹³ = 121233013829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121233022021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121233022081) 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, 1680741 + ... + 1751386.

It is an arithmetic number, because the mean of its divisors is an integer number (30309122368).

Almost surely, 2^121233022021 is an apocalyptic number.

It is an amenable number.

121233022021 is a deficient number, since it is larger than the sum of its proper divisors (3467451).

121233022021 is an equidigital number, since it uses as much as digits as its factorization.

121233022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3467450.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121233022021 its reverse (120220332121), we get a palindrome (241453354142).

The spelling of 121233022021 in words is "one hundred twenty-one billion, two hundred thirty-three million, twenty-two thousand, twenty-one".