22010102212221 has 20 divisors (see below), whose sum is σ = 32879643507612. Its totient is φ = 14673243037248.

The previous prime is 22010102212183. The next prime is 22010102212289. The reversal of 22010102212221 is 12221220101022.

It is a happy number.

22010102212221 is a `hidden beast` number, since 220 + 1 + 0 + 1 + 0 + 221 + 2 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20359172748996 + 1650929463225 = 4512114^2 + 1284885^2 .

It is not a de Polignac number, because 22010102212221 - 2³⁰ = 22009028470397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22010102212194 and 22010102212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22010102212291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6335551 + ... + 9173843.

Almost surely, 2^{22010102212221} is an apocalyptic number.

It is an amenable number.

22010102212221 is a deficient number, since it is larger than the sum of its proper divisors (10869541295391).

22010102212221 is an equidigital number, since it uses as much as digits as its factorization.

22010102212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934042 (or 2934033 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22010102212221 its reverse (12221220101022), we get a palindrome (34231322313243).

It can be divided in two parts, 220101022 and 12221, that multiplied together give a palindrome (2689854589862).

The spelling of 22010102212221 in words is "twenty-two trillion, ten billion, one hundred two million, two hundred twelve thousand, two hundred twenty-one".