1001001021102 has 96 divisors (see below), whose sum is σ = 2399816719872. Its totient is φ = 300209801472.

The previous prime is 1001001021071. The next prime is 1001001021157. The reversal of 1001001021102 is 2011201001001.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 190888 + ... + 1427739.

It is an arithmetic number, because the mean of its divisors is an integer number (24998090832).

Almost surely, 2^{1001001021102} is an apocalyptic number.

1001001021102 is an abundant number, since it is smaller than the sum of its proper divisors (1398815698770).

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

1001001021102 is a wasteful number, since it uses less digits than its factorization.

1001001021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618742 (or 1618739 counting only the distinct ones).

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

Adding to 1001001021102 its reverse (2011201001001), we get a palindrome (3012202022103).

The spelling of 1001001021102 in words is "one trillion, one billion, one million, twenty-one thousand, one hundred two".