1211102221100 has 36 divisors (see below), whose sum is σ = 2654112553008. Its totient is φ = 479644440000.

The previous prime is 1211102221079. The next prime is 1211102221117. The reversal of 1211102221100 is 11222011121.

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, 59945456 + ... + 59965655.

Almost surely, 2^{1211102221100} is an apocalyptic number.

1211102221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211102221100 is an abundant number, since it is smaller than the sum of its proper divisors (1443010331908).

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

1211102221100 is a wasteful number, since it uses less digits than its factorization.

1211102221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119911226 (or 119911219 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211102221100 its reverse (11222011121), we get a palindrome (1222324232221).

The spelling of 1211102221100 in words is "one trillion, two hundred eleven billion, one hundred two million, two hundred twenty-one thousand, one hundred".