1220113101 has 16 divisors (see below), whose sum is σ = 1713931200. Its totient is φ = 769926528.

The previous prime is 1220113099. The next prime is 1220113109. The reversal of 1220113101 is 1013110221.

1220113101 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1220113101 - 2¹ = 1220113099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220113109) 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, 61345 + ... + 78761.

It is an arithmetic number, because the mean of its divisors is an integer number (107120700).

Almost surely, 2^1220113101 is an apocalyptic number.

It is an amenable number.

1220113101 is a deficient number, since it is larger than the sum of its proper divisors (493818099).

1220113101 is a wasteful number, since it uses less digits than its factorization.

1220113101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18668.

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

The square root of 1220113101 is about 34930.1173917294. The cubic root of 1220113101 is about 1068.5627487409.

Adding to 1220113101 its reverse (1013110221), we get a palindrome (2233223322).

The spelling of 1220113101 in words is "one billion, two hundred twenty million, one hundred thirteen thousand, one hundred one".