1002001020122 has 8 divisors (see below), whose sum is σ = 1506865288500. Its totient is φ = 499712590624.

The previous prime is 1002001020047. The next prime is 1002001020133. The reversal of 1002001020122 is 2210201002001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 761362698721 + 240638321401 = 872561^2 + 490549^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643958747 + ... + 643960302.

Almost surely, 2^{1002001020122} is an apocalyptic number.

1002001020122 is a deficient number, since it is larger than the sum of its proper divisors (504864268378).

1002001020122 is a wasteful number, since it uses less digits than its factorization.

1002001020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287919440.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1002001020122 its reverse (2210201002001), we get a palindrome (3212202022123).

The spelling of 1002001020122 in words is "one trillion, two billion, one million, twenty thousand, one hundred twenty-two".