122031281 has 16 divisors (see below), whose sum is σ = 131803200. Its totient is φ = 112627008.

The previous prime is 122031271. The next prime is 122031323. The reversal of 122031281 is 182130221.

It is a cyclic number.

It is not a de Polignac number, because 122031281 - 2²² = 117836977 is a prime.

It is a super-2 number, since 2×122031281² = 29783267085001922, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (122031251) 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, 179915 + ... + 180591.

It is an arithmetic number, because the mean of its divisors is an integer number (8237700).

Almost surely, 2^122031281 is an apocalyptic number.

It is an amenable number.

122031281 is a deficient number, since it is larger than the sum of its proper divisors (9771919).

122031281 is a wasteful number, since it uses less digits than its factorization.

122031281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 122031281 is about 11046.7769507671. The cubic root of 122031281 is about 496.0099517276.

The spelling of 122031281 in words is "one hundred twenty-two million, thirty-one thousand, two hundred eighty-one".