2201011988 has 18 divisors (see below), whose sum is σ = 4480631946. Its totient is φ = 943290768.

The previous prime is 2201011987. The next prime is 2201012017. The reversal of 2201011988 is 8891101022.

It can be written as a sum of positive squares in only one way, i.e., 1979538064 + 221473924 = 44492^2 + 14882^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201011987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5614631 + ... + 5615022.

It is an arithmetic number, because the mean of its divisors is an integer number (248923997).

Almost surely, 2^2201011988 is an apocalyptic number.

2201011988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2201011988 is an abundant number, since it is smaller than the sum of its proper divisors (2279619958).

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

2201011988 is a wasteful number, since it uses less digits than its factorization.

2201011988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11229671 (or 11229662 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 2201011988 is about 46914.9441862612. The cubic root of 2201011988 is about 1300.7908379387.

The spelling of 2201011988 in words is "two billion, two hundred one million, eleven thousand, nine hundred eighty-eight".