11111000001210 has 48 divisors (see below), whose sum is σ = 29669372985096. Its totient is φ = 2882854053504.

The previous prime is 11111000001191. The next prime is 11111000001229. The reversal of 11111000001210 is 1210000011111.

It is an interprime number because it is at equal distance from previous prime (11111000001191) and next prime (11111000001229).

It can be written as a sum of positive squares in 4 ways, for example, as 10489184167401 + 621815833809 = 3238701^2 + 788553^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11111000001192 and 11111000001201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1668314989 + ... + 1668321648.

Almost surely, 2^{11111000001210} is an apocalyptic number.

11111000001210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11111000001210 is an abundant number, since it is smaller than the sum of its proper divisors (18558372983886).

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

11111000001210 is a wasteful number, since it uses less digits than its factorization.

11111000001210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336636687 (or 3336636684 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11111000001210 its reverse (1210000011111), we get a palindrome (12321000012321).

Subtracting from 11111000001210 its reverse (1210000011111), we obtain a palindrome (9900999990099).

The spelling of 11111000001210 in words is "eleven trillion, one hundred eleven billion, one thousand, two hundred ten".