1100001201020 has 24 divisors (see below), whose sum is σ = 2310270215568. Its totient is φ = 439949491200.

The previous prime is 1100001201011. The next prime is 1100001201029. The reversal of 1100001201020 is 201021000011.

It is an interprime number because it is at equal distance from previous prime (1100001201011) and next prime (1100001201029).

It is a junction number, because it is equal to n+sod(n) for n = 1100001200989 and 1100001201007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100001201029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3009686 + ... + 3355325.

It is an arithmetic number, because the mean of its divisors is an integer number (96261258982).

Almost surely, 2^{1100001201020} is an apocalyptic number.

1100001201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100001201020 is an abundant number, since it is smaller than the sum of its proper divisors (1210269014548).

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

1100001201020 is a wasteful number, since it uses less digits than its factorization.

1100001201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6373661 (or 6373659 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1100001201020 its reverse (201021000011), we get a palindrome (1301022201031).

The spelling of 1100001201020 in words is "one trillion, one hundred billion, one million, two hundred one thousand, twenty".