1121122201100 has 72 divisors (see below), whose sum is σ = 2655005568768. Its totient is φ = 407526644800.

The previous prime is 1121122201079. The next prime is 1121122201139. The reversal of 1121122201100 is 11022211211.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2737937 + ... + 3120663.

It is an arithmetic number, because the mean of its divisors is an integer number (36875077344).

Almost surely, 2^{1121122201100} is an apocalyptic number.

1121122201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121122201100 is an abundant number, since it is smaller than the sum of its proper divisors (1533883367668).

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

1121122201100 is a wasteful number, since it uses less digits than its factorization.

1121122201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385415 (or 385408 counting only the distinct ones).

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

Adding to 1121122201100 its reverse (11022211211), we get a palindrome (1132144412311).

It can be divided in two parts, 1121 and 122201100, that added together give a palindrome (122202221).

The spelling of 1121122201100 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred one thousand, one hundred".