22102002021 has 16 divisors (see below), whose sum is σ = 32896005120. Its totient is φ = 13083636720.

The previous prime is 22102002011. The next prime is 22102002037. The reversal of 22102002021 is 12020020122.

It is not a de Polignac number, because 22102002021 - 2¹¹ = 22101999973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22102001988 and 22102002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102002011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7786461 + ... + 7789298.

It is an arithmetic number, because the mean of its divisors is an integer number (2056000320).

Almost surely, 2^22102002021 is an apocalyptic number.

It is an amenable number.

22102002021 is a deficient number, since it is larger than the sum of its proper divisors (10794003099).

22102002021 is a wasteful number, since it uses less digits than its factorization.

22102002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15575816.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22102002021 its reverse (12020020122), we get a palindrome (34122022143).

The spelling of 22102002021 in words is "twenty-two billion, one hundred two million, two thousand, twenty-one".