221001111211004 has 12 divisors (see below), whose sum is σ = 386752469884200. Its totient is φ = 110500405529808.

The previous prime is 221001111210911. The next prime is 221001111211033. The reversal of 221001111211004 is 400112111100122.

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, 34172414 + ... + 40121765.

It is an arithmetic number, because the mean of its divisors is an integer number (32229372490350).

Almost surely, 2^{221001111211004} is an apocalyptic number.

It is an amenable number.

221001111211004 is a deficient number, since it is larger than the sum of its proper divisors (165751358673196).

221001111211004 is a wasteful number, since it uses less digits than its factorization.

221001111211004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75037852 (or 75037850 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221001111211004 its reverse (400112111100122), we get a palindrome (621113222311126).

The spelling of 221001111211004 in words is "two hundred twenty-one trillion, one billion, one hundred eleven million, two hundred eleven thousand, four".