201001011022021 has 24 divisors (see below), whose sum is σ = 235287512873280. Its totient is φ = 171206615365632.

The previous prime is 201001011021991. The next prime is 201001011022039. The reversal of 201001011022021 is 120220110100102.

It is not a de Polignac number, because 201001011022021 - 2²³ = 201001002633413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201001011021992 and 201001011022010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001011022321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13770465 + ... + 24323398.

It is an arithmetic number, because the mean of its divisors is an integer number (9803646369720).

Almost surely, 2^{201001011022021} is an apocalyptic number.

It is an amenable number.

201001011022021 is a deficient number, since it is larger than the sum of its proper divisors (34286501851259).

201001011022021 is a wasteful number, since it uses less digits than its factorization.

201001011022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38094553 (or 38094546 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201001011022021 its reverse (120220110100102), we get a palindrome (321221121122123).

The spelling of 201001011022021 in words is "two hundred one trillion, one billion, eleven million, twenty-two thousand, twenty-one".