1210100112011 has 4 divisors (see below), whose sum is σ = 1382971556592. Its totient is φ = 1037228667432.

The previous prime is 1210100112007. The next prime is 1210100112019. The reversal of 1210100112011 is 1102110010121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1210100112011 - 2² = 1210100112007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210100111983 and 1210100112001.

It is not an unprimeable number, because it can be changed into a prime (1210100112019) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 86435722280 + ... + 86435722293.

It is an arithmetic number, because the mean of its divisors is an integer number (345742889148).

Almost surely, 2^{1210100112011} is an apocalyptic number.

1210100112011 is a deficient number, since it is larger than the sum of its proper divisors (172871444581).

1210100112011 is an equidigital number, since it uses as much as digits as its factorization.

1210100112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172871444580.

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

Adding to 1210100112011 its reverse (1102110010121), we get a palindrome (2312210122132).

The spelling of 1210100112011 in words is "one trillion, two hundred ten billion, one hundred million, one hundred twelve thousand, eleven".