212001999976 has 48 divisors (see below), whose sum is σ = 430903951200. Its totient is φ = 97740032832.

The previous prime is 212001999961. The next prime is 212002000031. The reversal of 212001999976 is 679999100212.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1157175 + ... + 1327801.

It is an arithmetic number, because the mean of its divisors is an integer number (8977165650).

Almost surely, 2^212001999976 is an apocalyptic number.

212001999976 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212001999976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215451975600).

212001999976 is an abundant number, since it is smaller than the sum of its proper divisors (218901951224).

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

212001999976 is a wasteful number, since it uses less digits than its factorization.

212001999976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171578 (or 171561 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 55.

The spelling of 212001999976 in words is "two hundred twelve billion, one million, nine hundred ninety-nine thousand, nine hundred seventy-six".