221001111211002 has 64 divisors (see below), whose sum is σ = 470921181696000. Its totient is φ = 68941650780288.

The previous prime is 221001111210911. The next prime is 221001111211033. The reversal of 221001111211002 is 200112111100122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88074574 + ... + 90549062.

It is an arithmetic number, because the mean of its divisors is an integer number (7358143464000).

Almost surely, 2^{221001111211002} is an apocalyptic number.

221001111211002 is an abundant number, since it is smaller than the sum of its proper divisors (249920070484998).

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

221001111211002 is a wasteful number, since it uses less digits than its factorization.

221001111211002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484035.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221001111211002 its reverse (200112111100122), we get a palindrome (421113222311124).

The spelling of 221001111211002 in words is "two hundred twenty-one trillion, one billion, one hundred eleven million, two hundred eleven thousand, two".