222120101 has 4 divisors (see below), whose sum is σ = 253851552. Its totient is φ = 190388652.

The previous prime is 222120097. The next prime is 222120133. The reversal of 222120101 is 101021222.

It is a happy number.

222120101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101021222 = 2 ⋅50510611.

It is a cyclic number.

It is not a de Polignac number, because 222120101 - 2² = 222120097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15865715 + ... + 15865728.

It is an arithmetic number, because the mean of its divisors is an integer number (63462888).

Almost surely, 2^222120101 is an apocalyptic number.

It is an amenable number.

222120101 is a deficient number, since it is larger than the sum of its proper divisors (31731451).

222120101 is an equidigital number, since it uses as much as digits as its factorization.

222120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31731450.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 222120101 is about 14903.6942064711. The cubic root of 222120101 is about 605.6140667731.

Adding to 222120101 its reverse (101021222), we get a palindrome (323141323).

It can be divided in two parts, 2221 and 20101, that added together give a palindrome (22322).

The spelling of 222120101 in words is "two hundred twenty-two million, one hundred twenty thousand, one hundred one".