2101022440 has 32 divisors (see below), whose sum is σ = 5157056160. Its totient is φ = 764008000.

The previous prime is 2101022437. The next prime is 2101022453. The reversal of 2101022440 is 442201012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2387086 + ... + 2387965.

It is an arithmetic number, because the mean of its divisors is an integer number (161158005).

Almost surely, 2^2101022440 is an apocalyptic number.

2101022440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101022440 is an abundant number, since it is smaller than the sum of its proper divisors (3056033720).

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

2101022440 is a wasteful number, since it uses less digits than its factorization.

2101022440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4775073 (or 4775069 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2101022440 is about 45836.9113270081. The cubic root of 2101022440 is about 1280.7869591030.

Adding to 2101022440 its reverse (442201012), we get a palindrome (2543223452).

The spelling of 2101022440 in words is "two billion, one hundred one million, twenty-two thousand, four hundred forty".