212012001000 has 96 divisors (see below), whose sum is σ = 716600593800. Its totient is φ = 56536531200.

The previous prime is 212012000989. The next prime is 212012001013. The reversal of 212012001000 is 100210212.

It can be written as a sum of positive squares in 4 ways, for example, as 62117586756 + 149894414244 = 249234^2 + 387162^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11769445 + ... + 11787444.

Almost surely, 2^212012001000 is an apocalyptic number.

212012001000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212012001000 is an abundant number, since it is smaller than the sum of its proper divisors (504588592800).

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

212012001000 is a wasteful number, since it uses less digits than its factorization.

212012001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23556916 (or 23556899 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 212012001000 its reverse (100210212), we get a palindrome (212112211212).

The spelling of 212012001000 in words is "two hundred twelve billion, twelve million, one thousand".