211010121999 has 24 divisors (see below), whose sum is σ = 316362743424. Its totient is φ = 135383400000.

The previous prime is 211010121913. The next prime is 211010122009. The reversal of 211010121999 is 999121010112.

It is not a de Polignac number, because 211010121999 - 2¹⁷ = 211009990927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211010141999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2038752 + ... + 2139749.

It is an arithmetic number, because the mean of its divisors is an integer number (13181780976).

Almost surely, 2^211010121999 is an apocalyptic number.

211010121999 is a deficient number, since it is larger than the sum of its proper divisors (105352621425).

211010121999 is a wasteful number, since it uses less digits than its factorization.

211010121999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178719 (or 4178716 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 36.

The spelling of 211010121999 in words is "two hundred eleven billion, ten million, one hundred twenty-one thousand, nine hundred ninety-nine".