211101010988 has 24 divisors (see below), whose sum is σ = 422318951712. Its totient is φ = 90446805504.

The previous prime is 211101010963. The next prime is 211101011029. The reversal of 211101010988 is 889010101112.

It is a super-2 number, since 2×211101010988² (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 7 ways as a sum of consecutive naturals, for example, 940931 + ... + 1143482.

It is an arithmetic number, because the mean of its divisors is an integer number (17596622988).

Almost surely, 2^211101010988 is an apocalyptic number.

211101010988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

211101010988 is an abundant number, since it is smaller than the sum of its proper divisors (211217940724).

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

211101010988 is a wasteful number, since it uses less digits than its factorization.

211101010988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088041 (or 2088039 counting only the distinct ones).

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

The spelling of 211101010988 in words is "two hundred eleven billion, one hundred one million, ten thousand, nine hundred eighty-eight".