22101102021 has 16 divisors (see below), whose sum is σ = 29814739200. Its totient is φ = 14560939008.

The previous prime is 22101101993. The next prime is 22101102053. The reversal of 22101102021 is 12020110122.

It is not a de Polignac number, because 22101102021 - 2⁵ = 22101101989 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22101101988 and 22101102006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101101021) 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, 518020 + ... + 559058.

It is an arithmetic number, because the mean of its divisors is an integer number (1863421200).

Almost surely, 2^22101102021 is an apocalyptic number.

It is an amenable number.

22101102021 is a deficient number, since it is larger than the sum of its proper divisors (7713637179).

22101102021 is a wasteful number, since it uses less digits than its factorization.

22101102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43148.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22101102021 its reverse (12020110122), we get a palindrome (34121212143).

The spelling of 22101102021 in words is "twenty-two billion, one hundred one million, one hundred two thousand, twenty-one".