221211301030004 has 24 divisors (see below), whose sum is σ = 387893515197888. Its totient is φ = 110384587071360.

The previous prime is 221211301029991. The next prime is 221211301030007. The reversal of 221211301030004 is 400030103112122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221211301030007) 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, 207482924 + ... + 208546364.

It is an arithmetic number, because the mean of its divisors is an integer number (16162229799912).

Almost surely, 2^{221211301030004} is an apocalyptic number.

It is an amenable number.

221211301030004 is a deficient number, since it is larger than the sum of its proper divisors (166682214167884).

221211301030004 is a wasteful number, since it uses less digits than its factorization.

221211301030004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167335 (or 1167333 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 221211301030004 its reverse (400030103112122), we get a palindrome (621241404142126).

The spelling of 221211301030004 in words is "two hundred twenty-one trillion, two hundred eleven billion, three hundred one million, thirty thousand, four".