122222690 has 32 divisors (see below), whose sum is σ = 243077760. Its totient is φ = 44011264.

The previous prime is 122222657. The next prime is 122222699. The reversal of 122222690 is 96222221.

It is a super-2 number, since 2×122222690² = 29876771901672200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122222699) 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, 11720 + ... + 19539.

It is an arithmetic number, because the mean of its divisors is an integer number (7596180).

Almost surely, 2^122222690 is an apocalyptic number.

122222690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122222690 is a deficient number, since it is larger than the sum of its proper divisors (120855070).

122222690 is a wasteful number, since it uses less digits than its factorization.

122222690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31306.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 122222690 is about 11055.4371238771. The cubic root of 122222690 is about 496.2691507688.

The spelling of 122222690 in words is "one hundred twenty-two million, two hundred twenty-two thousand, six hundred ninety".