121020023 has 4 divisors (see below), whose sum is σ = 122826360. Its totient is φ = 119213688.

The previous prime is 121020019. The next prime is 121020061. The reversal of 121020023 is 320020121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121020023 - 2² = 121020019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121019986 and 121020013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020073) 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, 903068 + ... + 903201.

It is an arithmetic number, because the mean of its divisors is an integer number (30706590).

Almost surely, 2^121020023 is an apocalyptic number.

121020023 is a deficient number, since it is larger than the sum of its proper divisors (1806337).

121020023 is an equidigital number, since it uses as much as digits as its factorization.

121020023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806336.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 121020023 is about 11000.9100987146. The cubic root of 121020023 is about 494.6360253294.

Adding to 121020023 its reverse (320020121), we get a palindrome (441040144).

The spelling of 121020023 in words is "one hundred twenty-one million, twenty thousand, twenty-three".