212211621996 has 96 divisors (see below), whose sum is σ = 573461441280. Its totient is φ = 60363878400.

The previous prime is 212211621943. The next prime is 212211622037. The reversal of 212211621996 is 699126112212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 725716 + ... + 975236.

It is an arithmetic number, because the mean of its divisors is an integer number (5973556680).

Almost surely, 2^212211621996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212211621996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286730720640).

212211621996 is an abundant number, since it is smaller than the sum of its proper divisors (361249819284).

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

212211621996 is a wasteful number, since it uses less digits than its factorization.

212211621996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249935 (or 249933 counting only the distinct ones).

The product of its digits is 46656, while the sum is 42.

The spelling of 212211621996 in words is "two hundred twelve billion, two hundred eleven million, six hundred twenty-one thousand, nine hundred ninety-six".