3712961221000 has 32 divisors (see below), whose sum is σ = 8688329259480. Its totient is φ = 1485184488000.

The previous prime is 3712961220977. The next prime is 3712961221043. The reversal of 3712961221000 is 1221692173.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 576144757764 + 3136816463236 = 759042^2 + 1771106^2 .

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, 1856479611 + ... + 1856481610.

Almost surely, 2^{3712961221000} is an apocalyptic number.

It is an amenable number.

3712961221000 is an abundant number, since it is smaller than the sum of its proper divisors (4975368038480).

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

3712961221000 is a wasteful number, since it uses less digits than its factorization.

3712961221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712961242 (or 3712961228 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The spelling of 3712961221000 in words is "three trillion, seven hundred twelve billion, nine hundred sixty-one million, two hundred twenty-one thousand".