1001100021102 has 48 divisors (see below), whose sum is σ = 2265820277760. Its totient is φ = 318843865296.

The previous prime is 1001100021073. The next prime is 1001100021109. The reversal of 1001100021102 is 2011200011001.

It is a happy number.

1001100021102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001100021109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 935158 + ... + 1696089.

It is an arithmetic number, because the mean of its divisors is an integer number (47204589120).

Almost surely, 2^{1001100021102} is an apocalyptic number.

1001100021102 is an abundant number, since it is smaller than the sum of its proper divisors (1264720256658).

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

1001100021102 is a wasteful number, since it uses less digits than its factorization.

1001100021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632197 (or 2632194 counting only the distinct ones).

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

Adding to 1001100021102 its reverse (2011200011001), we get a palindrome (3012300032103).

The spelling of 1001100021102 in words is "one trillion, one billion, one hundred million, twenty-one thousand, one hundred two".