2201990021 has 8 divisors (see below), whose sum is σ = 2745338304. Its totient is φ = 1715836320.

The previous prime is 2201989949. The next prime is 2201990051. The reversal of 2201990021 is 1200991022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2201990021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201990051) by changing a digit.

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, 14298560 + ... + 14298713.

It is an arithmetic number, because the mean of its divisors is an integer number (343167288).

Almost surely, 2^2201990021 is an apocalyptic number.

It is an amenable number.

2201990021 is a deficient number, since it is larger than the sum of its proper divisors (543348283).

2201990021 is a wasteful number, since it uses less digits than its factorization.

2201990021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28597291.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 2201990021 is about 46925.3664983024. The cubic root of 2201990021 is about 1300.9834808351.

The spelling of 2201990021 in words is "two billion, two hundred one million, nine hundred ninety thousand, twenty-one".