21010022122201 has 16 divisors (see below), whose sum is σ = 24019563972096. Its totient is φ = 18002508693696.

The previous prime is 21010022122189. The next prime is 21010022122241. The reversal of 21010022122201 is 10222122001012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21010022122201 - 2¹⁹ = 21010021597913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21010022122241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364494355 + ... + 364551991.

It is an arithmetic number, because the mean of its divisors is an integer number (1501222748256).

Almost surely, 2^{21010022122201} is an apocalyptic number.

It is an amenable number.

21010022122201 is a deficient number, since it is larger than the sum of its proper divisors (3009541849895).

21010022122201 is a wasteful number, since it uses less digits than its factorization.

21010022122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74328.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21010022122201 its reverse (10222122001012), we get a palindrome (31232144123213).

The spelling of 21010022122201 in words is "twenty-one trillion, ten billion, twenty-two million, one hundred twenty-two thousand, two hundred one".