122154131 has 16 divisors (see below), whose sum is σ = 139207680. Its totient is φ = 106195680.

The previous prime is 122154107. The next prime is 122154133. The reversal of 122154131 is 131451221.

It is a cyclic number.

It is not a de Polignac number, because 122154131 - 2¹⁰ = 122153107 is a prime.

It is a super-2 number, since 2×122154131² = 29843263440730322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122154133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21470 + ... + 26556.

It is an arithmetic number, because the mean of its divisors is an integer number (8700480).

Almost surely, 2^122154131 is an apocalyptic number.

122154131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122154131 is a deficient number, since it is larger than the sum of its proper divisors (17053549).

122154131 is a wasteful number, since it uses less digits than its factorization.

122154131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5194.

The product of its digits is 240, while the sum is 20.

The square root of 122154131 is about 11052.3359974261. The cubic root of 122154131 is about 496.1763418138.

The spelling of 122154131 in words is "one hundred twenty-two million, one hundred fifty-four thousand, one hundred thirty-one".