1111121312100 has 36 divisors (see below), whose sum is σ = 3214844330544. Its totient is φ = 296299016480.

The previous prime is 1111121312099. The next prime is 1111121312113. The reversal of 1111121312100 is 12131211111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1111121312100.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1851868554 + ... + 1851869153.

It is an arithmetic number, because the mean of its divisors is an integer number (89301231404).

Almost surely, 2^{1111121312100} is an apocalyptic number.

1111121312100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1111121312100 is an abundant number, since it is smaller than the sum of its proper divisors (2103723018444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111121312100 is a wasteful number, since it uses less digits than its factorization.

1111121312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703737724 (or 3703737717 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 1111121312100 its reverse (12131211111), we get a palindrome (1123252523211).

It can be divided in two parts, 11 and 11121312100, that added together give a palindrome (11121312111).

The spelling of 1111121312100 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, three hundred twelve thousand, one hundred".