122997381 has 16 divisors (see below), whose sum is σ = 182703360. Its totient is φ = 73080000.

The previous prime is 122997331. The next prime is 122997383. The reversal of 122997381 is 183799221.

It is not a de Polignac number, because 122997381 - 2⁹ = 122996869 is a prime.

It is a super-2 number, since 2×122997381² = 30256711465718322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122997383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53245 + ... + 55506.

It is an arithmetic number, because the mean of its divisors is an integer number (11418960).

Almost surely, 2^122997381 is an apocalyptic number.

It is an amenable number.

122997381 is a deficient number, since it is larger than the sum of its proper divisors (59705979).

122997381 is a wasteful number, since it uses less digits than its factorization.

122997381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108796.

The product of its digits is 54432, while the sum is 42.

The square root of 122997381 is about 11090.4184321422. The cubic root of 122997381 is about 497.3154535500.

The spelling of 122997381 in words is "one hundred twenty-two million, nine hundred ninety-seven thousand, three hundred eighty-one".