2021002101100 has 36 divisors (see below), whose sum is σ = 4459906344600. Its totient is φ = 794699128960.

The previous prime is 2021002101077. The next prime is 2021002101127. The reversal of 2021002101100 is 11012001202.

It is a super-2 number, since 2×2021002101100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 171265465 + ... + 171277264.

It is an arithmetic number, because the mean of its divisors is an integer number (123886287350).

Almost surely, 2^{2021002101100} is an apocalyptic number.

2021002101100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021002101100 is an abundant number, since it is smaller than the sum of its proper divisors (2438904243500).

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

2021002101100 is a wasteful number, since it uses less digits than its factorization.

2021002101100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342542802 (or 342542795 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2021002101100 its reverse (11012001202), we get a palindrome (2032014102302).

The spelling of 2021002101100 in words is "two trillion, twenty-one billion, two million, one hundred one thousand, one hundred".