11111211001102 has 4 divisors (see below), whose sum is σ = 16666816501656. Its totient is φ = 5555605500550.

The previous prime is 11111211001061. The next prime is 11111211001213. The reversal of 11111211001102 is 20110011211111.

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

It is a super-2 number, since 2×11111211001102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777802750274 + ... + 2777802750277.

It is an arithmetic number, because the mean of its divisors is an integer number (4166704125414).

Almost surely, 2^{11111211001102} is an apocalyptic number.

11111211001102 is a deficient number, since it is larger than the sum of its proper divisors (5555605500554).

11111211001102 is an equidigital number, since it uses as much as digits as its factorization.

11111211001102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555605500553.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11111211001102 its reverse (20110011211111), we get a palindrome (31221222212213).

The spelling of 11111211001102 in words is "eleven trillion, one hundred eleven billion, two hundred eleven million, one thousand, one hundred two".