221001221211110 has 16 divisors (see below), whose sum is σ = 397832268884400. Its totient is φ = 88393806105696.

The previous prime is 221001221211077. The next prime is 221001221211137. The reversal of 221001221211110 is 11112122100122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835158440 + ... + 835423019.

It is an arithmetic number, because the mean of its divisors is an integer number (24864516805275).

Almost surely, 2^{221001221211110} is an apocalyptic number.

221001221211110 is a deficient number, since it is larger than the sum of its proper divisors (176831047673290).

221001221211110 is a wasteful number, since it uses less digits than its factorization.

221001221211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670594695.

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

Adding to 221001221211110 its reverse (11112122100122), we get a palindrome (232113343311232).

The spelling of 221001221211110 in words is "two hundred twenty-one trillion, one billion, two hundred twenty-one million, two hundred eleven thousand, one hundred ten".