1101100021002 has 24 divisors (see below), whose sum is σ = 2385746912484. Its totient is φ = 367028694144.

The previous prime is 1101100021001. The next prime is 1101100021013. The reversal of 1101100021002 is 2001200011011.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1100466038961 + 633982041 = 1049031^2 + 25179^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1101100021001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1264738 + ... + 1949810.

Almost surely, 2^{1101100021002} is an apocalyptic number.

1101100021002 is an abundant number, since it is smaller than the sum of its proper divisors (1284646891482).

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

1101100021002 is a wasteful number, since it uses less digits than its factorization.

1101100021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774374 (or 774371 counting only the distinct ones).

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

Adding to 1101100021002 its reverse (2001200011011), we get a palindrome (3102300032013).

Subtracting 1101100021002 from its reverse (2001200011011), we obtain a palindrome (900099990009).

The spelling of 1101100021002 in words is "one trillion, one hundred one billion, one hundred million, twenty-one thousand, two".