121622619 has 8 divisors (see below), whose sum is σ = 165934912. Its totient is φ = 79196040.

The previous prime is 121622603. The next prime is 121622623. The reversal of 121622619 is 916226121.

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

It is not a de Polignac number, because 121622619 - 2⁴ = 121622603 is a prime.

It is a super-2 number, since 2×121622619² = 29584122904838322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121622419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471277 + ... + 471534.

It is an arithmetic number, because the mean of its divisors is an integer number (20741864).

Almost surely, 2^121622619 is an apocalyptic number.

121622619 is a deficient number, since it is larger than the sum of its proper divisors (44312293).

121622619 is an equidigital number, since it uses as much as digits as its factorization.

121622619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942857.

The product of its digits is 2592, while the sum is 30.

The square root of 121622619 is about 11028.2645506897. The cubic root of 121622619 is about 495.4556481947.

The spelling of 121622619 in words is "one hundred twenty-one million, six hundred twenty-two thousand, six hundred nineteen".