22120002002021 has 24 divisors (see below), whose sum is σ = 27918802642752. Its totient is φ = 17154676123200.

The previous prime is 22120002002003. The next prime is 22120002002099. The reversal of 22120002002021 is 12020020002122.

It is not a de Polignac number, because 22120002002021 - 2²⁶ = 22119934893157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22120002001987 and 22120002002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120002002621) 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 23 ways as a sum of consecutive naturals, for example, 61706840 + ... + 62064273.

It is an arithmetic number, because the mean of its divisors is an integer number (1163283443448).

Almost surely, 2^{22120002002021} is an apocalyptic number.

It is an amenable number.

22120002002021 is a deficient number, since it is larger than the sum of its proper divisors (5798800640731).

22120002002021 is a wasteful number, since it uses less digits than its factorization.

22120002002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123771353 (or 123771342 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22120002002021 its reverse (12020020002122), we get a palindrome (34140022004143).

The spelling of 22120002002021 in words is "twenty-two trillion, one hundred twenty billion, two million, two thousand, twenty-one".