22221220101 has 16 divisors (see below), whose sum is σ = 31081656960. Its totient is φ = 14101855040.

The previous prime is 22221220079. The next prime is 22221220213. The reversal of 22221220101 is 10102212222.

It is a cyclic number.

It is not a de Polignac number, because 22221220101 - 2¹⁴ = 22221203717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221220001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1792530 + ... + 1804883.

It is an arithmetic number, because the mean of its divisors is an integer number (1942603560).

Almost surely, 2^22221220101 is an apocalyptic number.

It is an amenable number.

22221220101 is a deficient number, since it is larger than the sum of its proper divisors (8860436859).

22221220101 is a wasteful number, since it uses less digits than its factorization.

22221220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3597516.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22221220101 its reverse (10102212222), we get a palindrome (32323432323).

The spelling of 22221220101 in words is "twenty-two billion, two hundred twenty-one million, two hundred twenty thousand, one hundred one".