121002023 has 4 divisors (see below), whose sum is σ = 121351080. Its totient is φ = 120652968.

The previous prime is 121002019. The next prime is 121002041. The reversal of 121002023 is 320200121.

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 121002023 - 2² = 121002019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121001995 and 121002013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002523) 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, 174008 + ... + 174701.

It is an arithmetic number, because the mean of its divisors is an integer number (30337770).

Almost surely, 2^121002023 is an apocalyptic number.

121002023 is a deficient number, since it is larger than the sum of its proper divisors (349057).

121002023 is an equidigital number, since it uses as much as digits as its factorization.

121002023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349056.

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

The square root of 121002023 is about 11000.0919541611. The cubic root of 121002023 is about 494.6115007654.

Adding to 121002023 its reverse (320200121), we get a palindrome (441202144).

The spelling of 121002023 in words is "one hundred twenty-one million, two thousand, twenty-three".