22122100020001 has 4 divisors (see below), whose sum is σ = 22122136982404. Its totient is φ = 22122063057600.

The previous prime is 22122100019983. The next prime is 22122100020029. The reversal of 22122100020001 is 10002000122122.

It is a happy number.

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 16934747584225 + 5187352435776 = 4115185^2 + 2277576^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22122100020001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22122100020301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17568420 + ... + 18785461.

It is an arithmetic number, because the mean of its divisors is an integer number (5530534245601).

Almost surely, 2^{22122100020001} is an apocalyptic number.

It is an amenable number.

22122100020001 is a deficient number, since it is larger than the sum of its proper divisors (36962403).

22122100020001 is an equidigital number, since it uses as much as digits as its factorization.

22122100020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36962402.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22122100020001 its reverse (10002000122122), we get a palindrome (32124100142123).

It can be divided in two parts, 22122 and 100020001, that multiplied together give a palindrome (2212642462122).

The spelling of 22122100020001 in words is "twenty-two trillion, one hundred twenty-two billion, one hundred million, twenty thousand, one".