122151321 has 40 divisors (see below), whose sum is σ = 192012480. Its totient is φ = 77239008.

The previous prime is 122151317. The next prime is 122151331. The reversal of 122151321 is 123151221.

It is not a de Polignac number, because 122151321 - 2² = 122151317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122151294 and 122151303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122151331) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 322110 + ... + 322488.

It is an arithmetic number, because the mean of its divisors is an integer number (4800312).

Almost surely, 2^122151321 is an apocalyptic number.

It is an amenable number.

122151321 is a deficient number, since it is larger than the sum of its proper divisors (69861159).

122151321 is a wasteful number, since it uses less digits than its factorization.

122151321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587 (or 578 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 122151321 is about 11052.2088742477. The cubic root of 122151321 is about 496.1725371500.

The spelling of 122151321 in words is "one hundred twenty-two million, one hundred fifty-one thousand, three hundred twenty-one".