1220112201 has 48 divisors (see below), whose sum is σ = 2089559808. Its totient is φ = 626119200.

The previous prime is 1220112199. The next prime is 1220112203. The reversal of 1220112201 is 1022110221.

It is an interprime number because it is at equal distance from previous prime (1220112199) and next prime (1220112203).

It is not a de Polignac number, because 1220112201 - 2¹ = 1220112199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220112203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129666 + ... + 138756.

It is an arithmetic number, because the mean of its divisors is an integer number (43532496).

Almost surely, 2^1220112201 is an apocalyptic number.

1220112201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220112201 is a deficient number, since it is larger than the sum of its proper divisors (869447607).

1220112201 is a wasteful number, since it uses less digits than its factorization.

1220112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9202 (or 9195 counting only the distinct ones).

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

The square root of 1220112201 is about 34930.1045088617. The cubic root of 1220112201 is about 1068.5624860038.

Adding to 1220112201 its reverse (1022110221), we get a palindrome (2242222422).

The spelling of 1220112201 in words is "one billion, two hundred twenty million, one hundred twelve thousand, two hundred one".