21222202010101 has 16 divisors (see below), whose sum is σ = 21648730529664. Its totient is φ = 20800046674944.

The previous prime is 21222202010071. The next prime is 21222202010179. The reversal of 21222202010101 is 10101020222212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21222202010101 - 2¹¹ = 21222202008053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222202010501) 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, 30302976 + ... + 30995398.

It is an arithmetic number, because the mean of its divisors is an integer number (1353045658104).

Almost surely, 2^{21222202010101} is an apocalyptic number.

It is an amenable number.

21222202010101 is a deficient number, since it is larger than the sum of its proper divisors (426528519563).

21222202010101 is a wasteful number, since it uses less digits than its factorization.

21222202010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695580.

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

Adding to 21222202010101 its reverse (10101020222212), we get a palindrome (31323222232313).

The spelling of 21222202010101 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred two million, ten thousand, one hundred one".