1101211111100 has 36 divisors (see below), whose sum is σ = 2393157989544. Its totient is φ = 439833775680.

The previous prime is 1101211111097. The next prime is 1101211111141. The reversal of 1101211111100 is 11111121011.

It is a happy number.

It is a super-2 number, since 2×1101211111100² (a number of 25 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 in 11 ways as a sum of consecutive naturals, for example, 8065322 + ... + 8200721.

Almost surely, 2^{1101211111100} is an apocalyptic number.

1101211111100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101211111100 is an abundant number, since it is smaller than the sum of its proper divisors (1291946878444).

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

1101211111100 is a wasteful number, since it uses less digits than its factorization.

1101211111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16266734 (or 16266727 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 1101211111100 its reverse (11111121011), we get a palindrome (1112322232111).

It can be divided in two parts, 110121 and 1111100, that added together give a palindrome (1221221).

The spelling of 1101211111100 in words is "one trillion, one hundred one billion, two hundred eleven million, one hundred eleven thousand, one hundred".