22120111020001 has 4 divisors (see below), whose sum is σ = 22120121024452. Its totient is φ = 22120101015552.

The previous prime is 22120111019983. The next prime is 22120111020079. The reversal of 22120111020001 is 10002011102122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5764436053776 + 16355674966225 = 2400924^2 + 4044215^2 .

It is a cyclic number.

It is not a de Polignac number, because 22120111020001 - 2⁵ = 22120111019969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22120111020701) 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, 54240 + ... + 6651553.

It is an arithmetic number, because the mean of its divisors is an integer number (5530030256113).

Almost surely, 2^{22120111020001} is an apocalyptic number.

It is an amenable number.

22120111020001 is a deficient number, since it is larger than the sum of its proper divisors (10004451).

22120111020001 is an equidigital number, since it uses as much as digits as its factorization.

22120111020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10004450.

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

Adding to 22120111020001 its reverse (10002011102122), we get a palindrome (32122122122123).

The spelling of 22120111020001 in words is "twenty-two trillion, one hundred twenty billion, one hundred eleven million, twenty thousand, one".