122180819 has 12 divisors (see below), whose sum is σ = 130229400. Its totient is φ = 114605568.

The previous prime is 122180809. The next prime is 122180831. The reversal of 122180819 is 918081221.

It is not a de Polignac number, because 122180819 - 2⁴ = 122180803 is a prime.

It is a super-2 number, since 2×122180819² = 29856305063021522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122180809) 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 11 ways as a sum of consecutive naturals, for example, 120587 + ... + 121595.

It is an arithmetic number, because the mean of its divisors is an integer number (10852450).

Almost surely, 2^122180819 is an apocalyptic number.

122180819 is a deficient number, since it is larger than the sum of its proper divisors (8048581).

122180819 is a wasteful number, since it uses less digits than its factorization.

122180819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462 (or 1445 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 122180819 is about 11053.5432780625. The cubic root of 122180819 is about 496.2124737341.

The spelling of 122180819 in words is "one hundred twenty-two million, one hundred eighty thousand, eight hundred nineteen".