222121021111101 has 24 divisors (see below), whose sum is σ = 385974706694720. Its totient is φ = 120245966315136.

The previous prime is 222121021111013. The next prime is 222121021111127. The reversal of 222121021111101 is 101111120121222.

It is a happy number.

222121021111101 is a `hidden beast` number, since 2 + 221 + 210 + 21 + 111 + 101 = 666.

222121021111101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 222121021111101 - 2¹³ = 222121021102909 is a prime.

It is a super-2 number, since 2×222121021111101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121001111101) 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, 92782380220 + ... + 92782382613.

Almost surely, 2^{222121021111101} is an apocalyptic number.

222121021111101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222121021111101 is a deficient number, since it is larger than the sum of its proper divisors (163853685583619).

222121021111101 is a wasteful number, since it uses less digits than its factorization.

222121021111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185564762865 (or 185564762862 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 222121021111101 its reverse (101111120121222), we get a palindrome (323232141232323).

The spelling of 222121021111101 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, twenty-one million, one hundred eleven thousand, one hundred one".