10222012111221 has 24 divisors (see below), whose sum is σ = 15376782915000. Its totient is φ = 6535526965632.

The previous prime is 10222012111127. The next prime is 10222012111243. The reversal of 10222012111221 is 12211121022201.

10222012111221 is a `hidden beast` number, since 10 + 2 + 220 + 1 + 211 + 1 + 221 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 497680866225 + 9724331244996 = 705465^2 + 3118386^2 .

It is not a de Polignac number, because 10222012111221 - 2⁷ = 10222012111093 is a prime.

It is a super-2 number, since 2×10222012111221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10222012111194 and 10222012111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10222012111321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131386606 + ... + 131464383.

It is an arithmetic number, because the mean of its divisors is an integer number (640699288125).

Almost surely, 2^{10222012111221} is an apocalyptic number.

It is an amenable number.

10222012111221 is a deficient number, since it is larger than the sum of its proper divisors (5154770803779).

10222012111221 is a wasteful number, since it uses less digits than its factorization.

10222012111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262851173 (or 262851170 counting only the distinct ones).

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

Adding to 10222012111221 its reverse (12211121022201), we get a palindrome (22433133133422).

The spelling of 10222012111221 in words is "ten trillion, two hundred twenty-two billion, twelve million, one hundred eleven thousand, two hundred twenty-one".