211012099980 has 48 divisors (see below), whose sum is σ = 644546052864. Its totient is φ = 51154448320.

The previous prime is 211012099979. The next prime is 211012099993. The reversal of 211012099980 is 89990210112.

It is a super-2 number, since 2×211012099980² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 159856992 + ... + 159858311.

It is an arithmetic number, because the mean of its divisors is an integer number (13428042768).

Almost surely, 2^211012099980 is an apocalyptic number.

211012099980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211012099980 is an abundant number, since it is smaller than the sum of its proper divisors (433533952884).

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

211012099980 is a wasteful number, since it uses less digits than its factorization.

211012099980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319715326 (or 319715324 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 42.

The spelling of 211012099980 in words is "two hundred eleven billion, twelve million, ninety-nine thousand, nine hundred eighty".