22102100021101 has 4 divisors (see below), whose sum is σ = 23402223551772. Its totient is φ = 20801976490432.

The previous prime is 22102100021077. The next prime is 22102100021149. The reversal of 22102100021101 is 10112000120122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5976044714025 + 16126055307076 = 2444595^2 + 4015726^2 .

It is a cyclic number.

It is not a de Polignac number, because 22102100021101 - 2⁹ = 22102100020589 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 (22102100061101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650061765310 + ... + 650061765343.

It is an arithmetic number, because the mean of its divisors is an integer number (5850555887943).

Almost surely, 2^{22102100021101} is an apocalyptic number.

It is an amenable number.

22102100021101 is a deficient number, since it is larger than the sum of its proper divisors (1300123530671).

22102100021101 is a wasteful number, since it uses less digits than its factorization.

22102100021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300123530670.

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

Adding to 22102100021101 its reverse (10112000120122), we get a palindrome (32214100141223).

The spelling of 22102100021101 in words is "twenty-two trillion, one hundred two billion, one hundred million, twenty-one thousand, one hundred one".