211330090188 has 144 divisors (see below), whose sum is σ = 621386228736. Its totient is φ = 59307050880.

The previous prime is 211330090177. The next prime is 211330090189. The reversal of 211330090188 is 881090033112.

211330090188 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (211330090189) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11412145 + ... + 11430647.

It is an arithmetic number, because the mean of its divisors is an integer number (4315182144).

Almost surely, 2^211330090188 is an apocalyptic number.

211330090188 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211330090188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310693114368).

211330090188 is an abundant number, since it is smaller than the sum of its proper divisors (410056138548).

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

211330090188 is a wasteful number, since it uses less digits than its factorization.

211330090188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19324 (or 19319 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The spelling of 211330090188 in words is "two hundred eleven billion, three hundred thirty million, ninety thousand, one hundred eighty-eight".