212220199974 has 16 divisors (see below), whose sum is σ = 424581399360. Its totient is φ = 70716566760.

The previous prime is 212220199967. The next prime is 212220199979. The reversal of 212220199974 is 479991022212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212220199979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5855404 + ... + 5891535.

It is an arithmetic number, because the mean of its divisors is an integer number (26536337460).

Almost surely, 2^212220199974 is an apocalyptic number.

212220199974 is an abundant number, since it is smaller than the sum of its proper divisors (212361199386).

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

212220199974 is a wasteful number, since it uses less digits than its factorization.

212220199974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11749955.

The product of its (nonzero) digits is 326592, while the sum is 48.

The spelling of 212220199974 in words is "two hundred twelve billion, two hundred twenty million, one hundred ninety-nine thousand, nine hundred seventy-four".