1100021121200 has 60 divisors (see below), whose sum is σ = 2733931832640. Its totient is φ = 424835738880.

The previous prime is 1100021121193. The next prime is 1100021121211. The reversal of 1100021121200 is 21211200011.

It is a super-2 number, since 2×1100021121200² (a number of 25 digits) contains 22 as substring.

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, 47403104 + ... + 47426303.

It is an arithmetic number, because the mean of its divisors is an integer number (45565530544).

Almost surely, 2^{1100021121200} is an apocalyptic number.

1100021121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100021121200 is an abundant number, since it is smaller than the sum of its proper divisors (1633910711440).

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

1100021121200 is a wasteful number, since it uses less digits than its factorization.

1100021121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94829454 (or 94829443 counting only the distinct ones).

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

Adding to 1100021121200 its reverse (21211200011), we get a palindrome (1121232321211).

It can be divided in two parts, 1100021 and 121200, that added together give a palindrome (1221221).

The spelling of 1100021121200 in words is "one trillion, one hundred billion, twenty-one million, one hundred twenty-one thousand, two hundred".