22111010020001 has 12 divisors (see below), whose sum is σ = 25721241338052. Its totient is φ = 18952094988288.

The previous prime is 22111010019983. The next prime is 22111010020003. The reversal of 22111010020001 is 10002001011122.

It can be written as a sum of positive squares in 2 ways, for example, as 7931680872976 + 14179329147025 = 2816324^2 + 3765545^2 .

It is not a de Polignac number, because 22111010020001 - 2¹⁴ = 22111010003617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22111010020003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2432321 + ... + 7080833.

It is an arithmetic number, because the mean of its divisors is an integer number (2143436778171).

Almost surely, 2^{22111010020001} is an apocalyptic number.

It is an amenable number.

22111010020001 is a deficient number, since it is larger than the sum of its proper divisors (3610231318051).

22111010020001 is an equidigital number, since it uses as much as digits as its factorization.

22111010020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4745600 (or 4745593 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 22111010020001 its reverse (10002001011122), we get a palindrome (32113011031123).

The spelling of 22111010020001 in words is "twenty-two trillion, one hundred eleven billion, ten million, twenty thousand, one".