1111121100010 has 32 divisors (see below), whose sum is σ = 2089469163600. Its totient is φ = 424873881600.

The previous prime is 1111121099969. The next prime is 1111121100049. The reversal of 1111121100010 is 100011211111.

It can be written as a sum of positive squares in 8 ways, for example, as 1006657042329 + 104464057681 = 1003323^2 + 323209^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 1111121100010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18938295 + ... + 18996874.

Almost surely, 2^{1111121100010} is an apocalyptic number.

1111121100010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1111121100010 is a deficient number, since it is larger than the sum of its proper divisors (978348063590).

1111121100010 is a wasteful number, since it uses less digits than its factorization.

1111121100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37935306.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 1111121100010 its reverse (100011211111), we get a palindrome (1211132311121).

It can be divided in two parts, 1111 and 121100010, that added together give a palindrome (121101121).

The spelling of 1111121100010 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, one hundred thousand, ten".