1001002100022 has 24 divisors (see below), whose sum is σ = 2171658248760. Its totient is φ = 333233464320.

The previous prime is 1001002100009. The next prime is 1001002100039. The reversal of 1001002100022 is 2200012001001.

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 = 1001002099977 and 1001002100013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36144304 + ... + 36171987.

It is an arithmetic number, because the mean of its divisors is an integer number (90485760365).

Almost surely, 2^{1001002100022} is an apocalyptic number.

1001002100022 is an abundant number, since it is smaller than the sum of its proper divisors (1170656148738).

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

1001002100022 is a wasteful number, since it uses less digits than its factorization.

1001002100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72317068 (or 72317065 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1001002100022 its reverse (2200012001001), we get a palindrome (3201014101023).

The spelling of 1001002100022 in words is "one trillion, one billion, two million, one hundred thousand, twenty-two".