3011221001000 has 32 divisors (see below), whose sum is σ = 7046257144680. Its totient is φ = 1204488400000.

The previous prime is 3011221000967. The next prime is 3011221001003. The reversal of 3011221001000 is 1001221103.

It can be written as a sum of positive squares in 4 ways, for example, as 948843535396 + 2062377465604 = 974086^2 + 1436098^2 .

It is not an unprimeable number, because it can be changed into a prime (3011221001003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1505609501 + ... + 1505611500.

Almost surely, 2^{3011221001000} is an apocalyptic number.

It is an amenable number.

3011221001000 is an abundant number, since it is smaller than the sum of its proper divisors (4035036143680).

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

3011221001000 is a wasteful number, since it uses less digits than its factorization.

3011221001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011221022 (or 3011221008 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 3011221001000 its reverse (1001221103), we get a palindrome (3012222222103).

The spelling of 3011221001000 in words is "three trillion, eleven billion, two hundred twenty-one million, one thousand".