220122101 has 2 divisors, whose sum is σ = 220122102. Its totient is φ = 220122100.

The previous prime is 220122061. The next prime is 220122131. The reversal of 220122101 is 101221022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123787876 + 96334225 = 11126^2 + 9815^2 .

It is a cyclic number.

It is not a de Polignac number, because 220122101 - 2²² = 215927797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220122131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110061050 + 110061051.

It is an arithmetic number, because the mean of its divisors is an integer number (110061051).

Almost surely, 2^220122101 is an apocalyptic number.

It is an amenable number.

220122101 is a deficient number, since it is larger than the sum of its proper divisors (1).

220122101 is an equidigital number, since it uses as much as digits as its factorization.

220122101 is an evil number, because the sum of its binary digits is even.

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

The square root of 220122101 is about 14836.5124271171. The cubic root of 220122101 is about 603.7927349381.

Adding to 220122101 its reverse (101221022), we get a palindrome (321343123).

The spelling of 220122101 in words is "two hundred twenty million, one hundred twenty-two thousand, one hundred one".