1001212221004 has 12 divisors (see below), whose sum is σ = 1754709458544. Its totient is φ = 499866661424.

The previous prime is 1001212220971. The next prime is 1001212221011. The reversal of 1001212221004 is 4001222121001.

It is a super-2 number, since 2×1001212221004² (a number of 25 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 184859224 + ... + 184864639.

It is an arithmetic number, because the mean of its divisors is an integer number (146225788212).

Almost surely, 2^{1001212221004} is an apocalyptic number.

It is an amenable number.

1001212221004 is a deficient number, since it is larger than the sum of its proper divisors (753497237540).

1001212221004 is a wasteful number, since it uses less digits than its factorization.

1001212221004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369724544 (or 369724542 counting only the distinct ones).

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

Adding to 1001212221004 its reverse (4001222121001), we get a palindrome (5002434342005).

The spelling of 1001212221004 in words is "one trillion, one billion, two hundred twelve million, two hundred twenty-one thousand, four".