121123221023 has 64 divisors (see below), whose sum is σ = 153398181888. Its totient is φ = 93391246080.

The previous prime is 121123221013. The next prime is 121123221041. The reversal of 121123221023 is 320122321121.

It is not a de Polignac number, because 121123221023 - 2⁸ = 121123220767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121123220986 and 121123221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121123221013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20783636 + ... + 20789462.

It is an arithmetic number, because the mean of its divisors is an integer number (2396846592).

Almost surely, 2^121123221023 is an apocalyptic number.

121123221023 is a deficient number, since it is larger than the sum of its proper divisors (32274960865).

121123221023 is a wasteful number, since it uses less digits than its factorization.

121123221023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6012.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121123221023 its reverse (320122321121), we get a palindrome (441245542144).

The spelling of 121123221023 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred twenty-one thousand, twenty-three".