1011220012100 has 72 divisors (see below), whose sum is σ = 2328027663360. Its totient is φ = 380181755520.

The previous prime is 1011220012097. The next prime is 1011220012111. The reversal of 1011220012100 is 12100221101.

1011220012100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1854059 + ... + 2336658.

Almost surely, 2^{1011220012100} is an apocalyptic number.

1011220012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011220012100 is an abundant number, since it is smaller than the sum of its proper divisors (1316807651260).

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

1011220012100 is a wasteful number, since it uses less digits than its factorization.

1011220012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4190877 (or 4190870 counting only the distinct ones).

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

Adding to 1011220012100 its reverse (12100221101), we get a palindrome (1023320233201).

The spelling of 1011220012100 in words is "one trillion, eleven billion, two hundred twenty million, twelve thousand, one hundred".