121021023 has 8 divisors (see below), whose sum is σ = 161945008. Its totient is φ = 80388864.

The previous prime is 121021007. The next prime is 121021037. The reversal of 121021023 is 320120121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121021023 - 2⁴ = 121021007 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 (121021003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71986 + ... + 73647.

It is an arithmetic number, because the mean of its divisors is an integer number (20243126).

Almost surely, 2^121021023 is an apocalyptic number.

121021023 is a deficient number, since it is larger than the sum of its proper divisors (40923985).

121021023 is a wasteful number, since it uses less digits than its factorization.

121021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145913.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 121021023 is about 11000.9555494057. The cubic root of 121021023 is about 494.6373877339.

Adding to 121021023 its reverse (320120121), we get a palindrome (441141144).

The spelling of 121021023 in words is "one hundred twenty-one million, twenty-one thousand, twenty-three".