67001221000 has 128 divisors (see below), whose sum is σ = 179301807360. Its totient is φ = 22956288000.

The previous prime is 67001220997. The next prime is 67001221019. The reversal of 67001221000 is 12210076.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15908895 + ... + 15913105.

It is an arithmetic number, because the mean of its divisors is an integer number (1400795370).

Almost surely, 2^67001221000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67001221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89650903680).

67001221000 is an abundant number, since it is smaller than the sum of its proper divisors (112300586360).

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

67001221000 is a wasteful number, since it uses less digits than its factorization.

67001221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6512 (or 6498 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 67001221000 its reverse (12210076), we get a palindrome (67013431076).

The spelling of 67001221000 in words is "sixty-seven billion, one million, two hundred twenty-one thousand".