1101100201020 has 144 divisors (see below), whose sum is σ = 3561918403680. Its totient is φ = 274366291968.

The previous prime is 1101100201007. The next prime is 1101100201027. The reversal of 1101100201020 is 201020011011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1101100200993 and 1101100201011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101100201027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 869037 + ... + 1719716.

It is an arithmetic number, because the mean of its divisors is an integer number (24735544470).

Almost surely, 2^{1101100201020} is an apocalyptic number.

1101100201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101100201020 is an abundant number, since it is smaller than the sum of its proper divisors (2460818202660).

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

1101100201020 is a wasteful number, since it uses less digits than its factorization.

1101100201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2588924 (or 2588919 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1101100201020 its reverse (201020011011), we get a palindrome (1302120212031).

The spelling of 1101100201020 in words is "one trillion, one hundred one billion, one hundred million, two hundred one thousand, twenty".