1112121101 has 24 divisors (see below), whose sum is σ = 1419536664. Its totient is φ = 863291520.

The previous prime is 1112121089. The next prime is 1112121103. The reversal of 1112121101 is 1011212111.

It can be written as a sum of positive squares in 4 ways, for example, as 292444201 + 819676900 = 17101^2 + 28630^2 .

It is not a de Polignac number, because 1112121101 - 2³⁰ = 38379277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112121103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17291 + ... + 50231.

It is an arithmetic number, because the mean of its divisors is an integer number (59147361).

Almost surely, 2^1112121101 is an apocalyptic number.

It is an amenable number.

1112121101 is a deficient number, since it is larger than the sum of its proper divisors (307415563).

1112121101 is a wasteful number, since it uses less digits than its factorization.

1112121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33021 (or 33014 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

The square root of 1112121101 is about 33348.4797404619. The cubic root of 1112121101 is about 1036.0579009519.

Adding to 1112121101 its reverse (1011212111), we get a palindrome (2123333212).

It can be divided in two parts, 111212110 and 1, that added together give a palindrome (111212111).

The spelling of 1112121101 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, one hundred one".