122219840 has 28 divisors (see below), whose sum is σ = 291036756. Its totient is φ = 48887808.

The previous prime is 122219831. The next prime is 122219869. The reversal of 122219840 is 48912221.

It can be written as a sum of positive squares in 2 ways, for example, as 71639296 + 50580544 = 8464^2 + 7112^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190649 + ... + 191288.

Almost surely, 2^122219840 is an apocalyptic number.

122219840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122219840 is an abundant number, since it is smaller than the sum of its proper divisors (168816916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122219840 is an equidigital number, since it uses as much as digits as its factorization.

122219840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381954 (or 381944 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 122219840 is about 11055.3082272725. The cubic root of 122219840 is about 496.2652933888.

The spelling of 122219840 in words is "one hundred twenty-two million, two hundred nineteen thousand, eight hundred forty".