122251212 has 18 divisors (see below), whose sum is σ = 309023988. Its totient is φ = 40750392.

The previous prime is 122251177. The next prime is 122251237. The reversal of 122251212 is 212152221.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1697898 + ... + 1697969.

Almost surely, 2^122251212 is an apocalyptic number.

122251212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122251212 is an abundant number, since it is smaller than the sum of its proper divisors (186772776).

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

122251212 is a wasteful number, since it uses less digits than its factorization.

122251212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3395877 (or 3395872 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 122251212 is about 11056.7270021467. The cubic root of 122251212 is about 496.3077510424.

The spelling of 122251212 in words is "one hundred twenty-two million, two hundred fifty-one thousand, two hundred twelve".