10222111021221 has 24 divisors (see below), whose sum is σ = 16123822890240. Its totient is φ = 6188967259200.

The previous prime is 10222111021189. The next prime is 10222111021247. The reversal of 10222111021221 is 12212011122201.

10222111021221 is a `hidden beast` number, since 102 + 221 + 110 + 212 + 21 = 666.

It is not a de Polignac number, because 10222111021221 - 2⁵ = 10222111021189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10222111021194 and 10222111021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10222111021621) 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 23 ways as a sum of consecutive naturals, for example, 51997576 + ... + 52193793.

It is an arithmetic number, because the mean of its divisors is an integer number (671825953760).

Almost surely, 2^{10222111021221} is an apocalyptic number.

10222111021221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10222111021221 is a deficient number, since it is larger than the sum of its proper divisors (5901711869019).

10222111021221 is a wasteful number, since it uses less digits than its factorization.

10222111021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104192377 (or 104192374 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10222111021221 its reverse (12212011122201), we get a palindrome (22434122143422).

The spelling of 10222111021221 in words is "ten trillion, two hundred twenty-two billion, one hundred eleven million, twenty-one thousand, two hundred twenty-one".