1112101221 has 32 divisors (see below), whose sum is σ = 1929074688. Its totient is φ = 552594240.

The previous prime is 1112101213. The next prime is 1112101229. The reversal of 1112101221 is 1221012111.

It is an interprime number because it is at equal distance from previous prime (1112101213) and next prime (1112101229).

It is not a de Polignac number, because 1112101221 - 2³ = 1112101213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1112101197 and 1112101206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112101229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99346 + ... + 109971.

It is an arithmetic number, because the mean of its divisors is an integer number (60283584).

Almost surely, 2^1112101221 is an apocalyptic number.

1112101221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1112101221 is a deficient number, since it is larger than the sum of its proper divisors (816973467).

1112101221 is a wasteful number, since it uses less digits than its factorization.

1112101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209361.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1112101221 is about 33348.1816745681. The cubic root of 1112101221 is about 1036.0517274774.

Adding to 1112101221 its reverse (1221012111), we get a palindrome (2333113332).

The spelling of 1112101221 in words is "one billion, one hundred twelve million, one hundred one thousand, two hundred twenty-one".