2111100201020 has 48 divisors (see below), whose sum is σ = 4451876499168. Its totient is φ = 840908140800.

The previous prime is 2111100201017. The next prime is 2111100201029. The reversal of 2111100201020 is 201020011112.

It is a junction number, because it is equal to n+sod(n) for n = 2111100200992 and 2111100201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111100201029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7485407 + ... + 7762313.

It is an arithmetic number, because the mean of its divisors is an integer number (92747427066).

Almost surely, 2^{2111100201020} is an apocalyptic number.

2111100201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111100201020 is an abundant number, since it is smaller than the sum of its proper divisors (2340776298148).

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

2111100201020 is a wasteful number, since it uses less digits than its factorization.

2111100201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278510 (or 278508 counting only the distinct ones).

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

Adding to 2111100201020 its reverse (201020011112), we get a palindrome (2312120212132).

The spelling of 2111100201020 in words is "two trillion, one hundred eleven billion, one hundred million, two hundred one thousand, twenty".