21100222022201 has 8 divisors (see below), whose sum is σ = 25162997691264. Its totient is φ = 17299560912480.

The previous prime is 21100222022179. The next prime is 21100222022221. The reversal of 21100222022201 is 10222022200112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-21100222022201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21100222022201.

It is not an unprimeable number, because it can be changed into a prime (21100222022221) 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, 65528639660 + ... + 65528639981.

It is an arithmetic number, because the mean of its divisors is an integer number (3145374711408).

Almost surely, 2^{21100222022201} is an apocalyptic number.

It is an amenable number.

21100222022201 is a deficient number, since it is larger than the sum of its proper divisors (4062775669063).

21100222022201 is a wasteful number, since it uses less digits than its factorization.

21100222022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131057279671.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21100222022201 its reverse (10222022200112), we get a palindrome (31322244222313).

The spelling of 21100222022201 in words is "twenty-one trillion, one hundred billion, two hundred twenty-two million, twenty-two thousand, two hundred one".