1222120101 has 16 divisors (see below), whose sum is σ = 1680876800. Its totient is φ = 789248448.

The previous prime is 1222120073. The next prime is 1222120129. The reversal of 1222120101 is 1010212221.

It is an interprime number because it is at equal distance from previous prime (1222120073) and next prime (1222120129).

It is not a de Polignac number, because 1222120101 - 2⁹ = 1222119589 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 (1222120901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1380 + ... + 49458.

It is an arithmetic number, because the mean of its divisors is an integer number (105054800).

Almost surely, 2^1222120101 is an apocalyptic number.

It is an amenable number.

1222120101 is a deficient number, since it is larger than the sum of its proper divisors (458756699).

1222120101 is a wasteful number, since it uses less digits than its factorization.

1222120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48348.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1222120101 is about 34958.8343770212. The cubic root of 1222120101 is about 1069.1483312305.

Adding to 1222120101 its reverse (1010212221), we get a palindrome (2232332322).

It can be divided in two parts, 1222120 and 101, that added together give a palindrome (1222221).

The spelling of 1222120101 in words is "one billion, two hundred twenty-two million, one hundred twenty thousand, one hundred one".