1002221020026 has 64 divisors (see below), whose sum is σ = 2295587606400. Its totient is φ = 323922630528.

The previous prime is 1002221019979. The next prime is 1002221020027. The reversal of 1002221020026 is 6200201222001.

1002221020026 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 (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1002221019990 and 1002221020008.

It is not an unprimeable number, because it can be changed into a prime (1002221020027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1257141 + ... + 1893368.

It is an arithmetic number, because the mean of its divisors is an integer number (35868556350).

Almost surely, 2^{1002221020026} is an apocalyptic number.

1002221020026 is an abundant number, since it is smaller than the sum of its proper divisors (1293366586374).

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

1002221020026 is a wasteful number, since it uses less digits than its factorization.

1002221020026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3150700 (or 3150694 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1002221020026 its reverse (6200201222001), we get a palindrome (7202422242027).

The spelling of 1002221020026 in words is "one trillion, two billion, two hundred twenty-one million, twenty thousand, twenty-six".