1020211221004 has 24 divisors (see below), whose sum is σ = 1847100225600. Its totient is φ = 492471463680.

The previous prime is 1020211220989. The next prime is 1020211221011. The reversal of 1020211221004 is 4001221120201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 918484 + ... + 1698244.

It is an arithmetic number, because the mean of its divisors is an integer number (76962509400).

Almost surely, 2^{1020211221004} is an apocalyptic number.

It is an amenable number.

1020211221004 is a deficient number, since it is larger than the sum of its proper divisors (826889004596).

1020211221004 is a wasteful number, since it uses less digits than its factorization.

1020211221004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791073 (or 791071 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1020211221004 its reverse (4001221120201), we get a palindrome (5021432341205).

The spelling of 1020211221004 in words is "one trillion, twenty billion, two hundred eleven million, two hundred twenty-one thousand, four".