1001222021004 has 48 divisors (see below), whose sum is σ = 2418248044800. Its totient is φ = 322031676736.

The previous prime is 1001222020993. The next prime is 1001222021011. The reversal of 1001222021004 is 4001202221001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335934 + ... + 1454405.

It is an arithmetic number, because the mean of its divisors is an integer number (50380167600).

Almost surely, 2^{1001222021004} is an apocalyptic number.

It is an amenable number.

1001222021004 is an abundant number, since it is smaller than the sum of its proper divisors (1417026023796).

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

1001222021004 is a wasteful number, since it uses less digits than its factorization.

1001222021004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791982 (or 1791980 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1001222021004 its reverse (4001202221001), we get a palindrome (5002424242005).

The spelling of 1001222021004 in words is "one trillion, one billion, two hundred twenty-two million, twenty-one thousand, four".