121122023021 has 4 divisors (see below), whose sum is σ = 121122821472. Its totient is φ = 121121224572.

The previous prime is 121122022963. The next prime is 121122023093. The reversal of 121122023021 is 120320221121.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 120320221121 = 919 ⋅130925159.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121122023021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122073021) 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, 93785 + ... + 501038.

It is an arithmetic number, because the mean of its divisors is an integer number (30280705368).

Almost surely, 2^121122023021 is an apocalyptic number.

It is an amenable number.

121122023021 is a deficient number, since it is larger than the sum of its proper divisors (798451).

121122023021 is an equidigital number, since it uses as much as digits as its factorization.

121122023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798450.

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

Adding to 121122023021 its reverse (120320221121), we get a palindrome (241442244142).

The spelling of 121122023021 in words is "one hundred twenty-one billion, one hundred twenty-two million, twenty-three thousand, twenty-one".