2101220088 has 64 divisors (see below), whose sum is σ = 5774440320. Its totient is φ = 631862400.

The previous prime is 2101220087. The next prime is 2101220167. The reversal of 2101220088 is 8800221012.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101220081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4206 + ... + 64962.

It is an arithmetic number, because the mean of its divisors is an integer number (90225630).

Almost surely, 2^2101220088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101220088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2887220160).

2101220088 is an abundant number, since it is smaller than the sum of its proper divisors (3673220232).

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

2101220088 is a wasteful number, since it uses less digits than its factorization.

2101220088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60908 (or 60904 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 2101220088 is about 45839.0672679975. The cubic root of 2101220088 is about 1280.8271200326.

The spelling of 2101220088 in words is "two billion, one hundred one million, two hundred twenty thousand, eighty-eight".