211001011988 has 48 divisors (see below), whose sum is σ = 403575775680. Its totient is φ = 95945990400.

The previous prime is 211001011981. The next prime is 211001011993. The reversal of 211001011988 is 889110100112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211001011981) by changing a digit.

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, 835448 + ... + 1058288.

It is an arithmetic number, because the mean of its divisors is an integer number (8407828660).

Almost surely, 2^211001011988 is an apocalyptic number.

It is an amenable number.

211001011988 is a deficient number, since it is larger than the sum of its proper divisors (192574763692).

211001011988 is a wasteful number, since it uses less digits than its factorization.

211001011988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223128 (or 223126 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 32.

The spelling of 211001011988 in words is "two hundred eleven billion, one million, eleven thousand, nine hundred eighty-eight".