2120222101 has 2 divisors, whose sum is σ = 2120222102. Its totient is φ = 2120222100.

The previous prime is 2120222089. The next prime is 2120222119. The reversal of 2120222101 is 1012220212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1491967876 + 628254225 = 38626^2 + 25065^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120222101 - 2⁷ = 2120221973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120222701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060111050 + 1060111051.

It is an arithmetic number, because the mean of its divisors is an integer number (1060111051).

Almost surely, 2^2120222101 is an apocalyptic number.

It is an amenable number.

2120222101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120222101 is an equidigital number, since it uses as much as digits as its factorization.

2120222101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2120222101 is about 46045.8695324564. The cubic root of 2120222101 is about 1284.6765174629.

Adding to 2120222101 its reverse (1012220212), we get a palindrome (3132442313).

The spelling of 2120222101 in words is "two billion, one hundred twenty million, two hundred twenty-two thousand, one hundred one".