211122001100 has 54 divisors (see below), whose sum is σ = 469581671412. Its totient is φ = 82389008000.

The previous prime is 211122001091. The next prime is 211122001229. The reversal of 211122001100 is 1100221112.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 459866 + ... + 796065.

It is an arithmetic number, because the mean of its divisors is an integer number (8695956878).

Almost surely, 2^211122001100 is an apocalyptic number.

211122001100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211122001100 is an abundant number, since it is smaller than the sum of its proper divisors (258459670312).

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

211122001100 is a wasteful number, since it uses less digits than its factorization.

211122001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256027 (or 1255979 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 211122001100 its reverse (1100221112), we get a palindrome (212222222212).

The spelling of 211122001100 in words is "two hundred eleven billion, one hundred twenty-two million, one thousand, one hundred".