201000022021 has 8 divisors (see below), whose sum is σ = 201808871424. Its totient is φ = 200191380480.

The previous prime is 201000021997. The next prime is 201000022033. The reversal of 201000022021 is 120220000102.

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 201000022021 - 2¹³ = 201000013829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201000021989 and 201000022007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000025021) 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, 2057346 + ... + 2152828.

It is an arithmetic number, because the mean of its divisors is an integer number (25226108928).

Almost surely, 2^201000022021 is an apocalyptic number.

It is an amenable number.

201000022021 is a deficient number, since it is larger than the sum of its proper divisors (808849403).

201000022021 is an equidigital number, since it uses as much as digits as its factorization.

201000022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103931.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 201000022021 its reverse (120220000102), we get a palindrome (321220022123).

The spelling of 201000022021 in words is "two hundred one billion, twenty-two thousand, twenty-one".