3201331221000 has 512 divisors, whose sum is σ = 12287628288000. Its totient is φ = 764492256000.

The previous prime is 3201331220999. The next prime is 3201331221001. The reversal of 3201331221000 is 1221331023.

3201331221000 is a `hidden beast` number, since 320 + 1 + 331 + 2 + 2 + 10 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (3201331220999) and next prime (3201331221001).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (3201331221001) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19818561 + ... + 19979439.

It is an arithmetic number, because the mean of its divisors is an integer number (23999274000).

Almost surely, 2^{3201331221000} is an apocalyptic number.

3201331221000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3201331221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6143814144000).

3201331221000 is an abundant number, since it is smaller than the sum of its proper divisors (9086297067000).

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

3201331221000 is a wasteful number, since it uses less digits than its factorization.

3201331221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160987 (or 160967 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 3201331221000 its reverse (1221331023), we get a palindrome (3202552552023).

The spelling of 3201331221000 in words is "three trillion, two hundred one billion, three hundred thirty-one million, two hundred twenty-one thousand".