1221440330004 has 12 divisors (see below), whose sum is σ = 2850027436704. Its totient is φ = 407146776664.

The previous prime is 1221440329909. The next prime is 1221440330023. The reversal of 1221440330004 is 4000330441221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50893347072 + ... + 50893347095.

It is an arithmetic number, because the mean of its divisors is an integer number (237502286392).

Almost surely, 2^{1221440330004} is an apocalyptic number.

It is an amenable number.

1221440330004 is an abundant number, since it is smaller than the sum of its proper divisors (1628587106700).

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

1221440330004 is a wasteful number, since it uses less digits than its factorization.

1221440330004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101786694174 (or 101786694172 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1221440330004 its reverse (4000330441221), we get a palindrome (5221770771225).

The spelling of 1221440330004 in words is "one trillion, two hundred twenty-one billion, four hundred forty million, three hundred thirty thousand, four".