1972222212 has 24 divisors (see below), whose sum is σ = 4602570336. Its totient is φ = 657304768.

The previous prime is 1972222177. The next prime is 1972222229. The reversal of 1972222212 is 2122222791.

It is a self number, because there is not a number n which added to its sum of digits gives 1972222212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141208 + ... + 154544.

It is an arithmetic number, because the mean of its divisors is an integer number (191773764).

Almost surely, 2^1972222212 is an apocalyptic number.

1972222212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1972222212 is an abundant number, since it is smaller than the sum of its proper divisors (2630348124).

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

1972222212 is a wasteful number, since it uses less digits than its factorization.

1972222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25667 (or 25665 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 1972222212 is about 44409.7085331575. The cubic root of 1972222212 is about 1254.0608651069.

The spelling of 1972222212 in words is "one billion, nine hundred seventy-two million, two hundred twenty-two thousand, two hundred twelve".