1002001201022 has 4 divisors (see below), whose sum is σ = 1503001801536. Its totient is φ = 501000600510.

The previous prime is 1002001201009. The next prime is 1002001201031. The reversal of 1002001201022 is 2201021002001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 1002001200994 and 1002001201012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250500300254 + ... + 250500300257.

It is an arithmetic number, because the mean of its divisors is an integer number (375750450384).

Almost surely, 2^{1002001201022} is an apocalyptic number.

1002001201022 is a deficient number, since it is larger than the sum of its proper divisors (501000600514).

1002001201022 is an equidigital number, since it uses as much as digits as its factorization.

1002001201022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501000600513.

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

Adding to 1002001201022 its reverse (2201021002001), we get a palindrome (3203022203023).

The spelling of 1002001201022 in words is "one trillion, two billion, one million, two hundred one thousand, twenty-two".