121215023 has 8 divisors (see below), whose sum is σ = 122442240. Its totient is φ = 119992320.

The previous prime is 121215019. The next prime is 121215043. The reversal of 121215023 is 320512121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121215023 - 2² = 121215019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121214992 and 121215010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121215043) 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, 80663 + ... + 82151.

It is an arithmetic number, because the mean of its divisors is an integer number (15305280).

Almost surely, 2^121215023 is an apocalyptic number.

121215023 is a deficient number, since it is larger than the sum of its proper divisors (1227217).

121215023 is a wasteful number, since it uses less digits than its factorization.

121215023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 121215023 is about 11009.7694344614. The cubic root of 121215023 is about 494.9015523701.

Adding to 121215023 its reverse (320512121), we get a palindrome (441727144).

The spelling of 121215023 in words is "one hundred twenty-one million, two hundred fifteen thousand, twenty-three".