122155231 has 8 divisors (see below), whose sum is σ = 139054464. Its totient is φ = 106221720.

The previous prime is 122155213. The next prime is 122155247. The reversal of 122155231 is 132551221.

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

It is not a de Polignac number, because 122155231 - 2¹¹ = 122153183 is a prime.

It is a super-2 number, since 2×122155231² = 29843800921326722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122155291) 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, 241161 + ... + 241666.

It is an arithmetic number, because the mean of its divisors is an integer number (17381808).

Almost surely, 2^122155231 is an apocalyptic number.

122155231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122155231 is a deficient number, since it is larger than the sum of its proper divisors (16899233).

122155231 is a wasteful number, since it uses less digits than its factorization.

122155231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482861.

The product of its digits is 600, while the sum is 22.

The square root of 122155231 is about 11052.3857605496. The cubic root of 122155231 is about 496.1778311681.

The spelling of 122155231 in words is "one hundred twenty-two million, one hundred fifty-five thousand, two hundred thirty-one".