2201000021 has 8 divisors (see below), whose sum is σ = 2456930784. Its totient is φ = 1954375920.

The previous prime is 2200999991. The next prime is 2201000027. The reversal of 2201000021 is 1200001022.

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

It is a cyclic number.

It is not a de Polignac number, because 2201000021 - 2¹⁴ = 2200983637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2200999972 and 2201000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201000027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2326166 + ... + 2327111.

It is an arithmetic number, because the mean of its divisors is an integer number (307116348).

Almost surely, 2^2201000021 is an apocalyptic number.

It is an amenable number.

2201000021 is a deficient number, since it is larger than the sum of its proper divisors (255930763).

2201000021 is a wasteful number, since it uses less digits than its factorization.

2201000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4653331.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 2201000021 is about 46914.8166467695. The cubic root of 2201000021 is about 1300.7884804486.

Adding to 2201000021 its reverse (1200001022), we get a palindrome (3401001043).

The spelling of 2201000021 in words is "two billion, two hundred one million, twenty-one", and thus it is an aban number.