121000023 has 12 divisors (see below), whose sum is σ = 175564480. Its totient is φ = 80303616.

The previous prime is 121000003. The next prime is 121000049. The reversal of 121000023 is 320000121.

It is a happy number.

It is not a de Polignac number, because 121000023 - 2²⁵ = 87445591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120999969 and 121000014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28138 + ... + 32151.

Almost surely, 2^121000023 is an apocalyptic number.

121000023 is a deficient number, since it is larger than the sum of its proper divisors (54564457).

121000023 is a wasteful number, since it uses less digits than its factorization.

121000023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60518 (or 60515 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 121000023 is about 11000.0010454545. The cubic root of 121000023 is about 494.6087756637.

Adding to 121000023 its reverse (320000121), we get a palindrome (441000144).

The spelling of 121000023 in words is "one hundred twenty-one million, twenty-three", and thus it is an aban number.