1020221001004 has 6 divisors (see below), whose sum is σ = 1785386751764. Its totient is φ = 510110500500.

The previous prime is 1020221000989. The next prime is 1020221001017. The reversal of 1020221001004 is 4001001220201.

It is a happy number.

1020221001004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127527625122 + ... + 127527625129.

Almost surely, 2^{1020221001004} is an apocalyptic number.

It is an amenable number.

1020221001004 is a deficient number, since it is larger than the sum of its proper divisors (765165750760).

1020221001004 is a wasteful number, since it uses less digits than its factorization.

1020221001004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255055250255 (or 255055250253 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1020221001004 its reverse (4001001220201), we get a palindrome (5021222221205).

The spelling of 1020221001004 in words is "one trillion, twenty billion, two hundred twenty-one million, one thousand, four".