1011202021100 has 18 divisors (see below), whose sum is σ = 2194308386004. Its totient is φ = 404480808400.

The previous prime is 1011202021097. The next prime is 1011202021243. The reversal of 1011202021100 is 11202021101.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5056010006 + ... + 5056010205.

Almost surely, 2^{1011202021100} is an apocalyptic number.

1011202021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011202021100 is an abundant number, since it is smaller than the sum of its proper divisors (1183106364904).

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

1011202021100 is a wasteful number, since it uses less digits than its factorization.

1011202021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10112020225 (or 10112020218 counting only the distinct ones).

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

Adding to 1011202021100 its reverse (11202021101), we get a palindrome (1022404042201).

Subtracting from 1011202021100 its reverse (11202021101), we obtain a palindrome (999999999999).

The spelling of 1011202021100 in words is "one trillion, eleven billion, two hundred two million, twenty-one thousand, one hundred".