221002121110 has 8 divisors (see below), whose sum is σ = 397803818016. Its totient is φ = 88400848440.

The previous prime is 221002121071. The next prime is 221002121129. The reversal of 221002121110 is 11121200122.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 11050106046 + ... + 11050106065.

It is an arithmetic number, because the mean of its divisors is an integer number (49725477252).

Almost surely, 2^221002121110 is an apocalyptic number.

221002121110 is a deficient number, since it is larger than the sum of its proper divisors (176801696906).

221002121110 is a wasteful number, since it uses less digits than its factorization.

221002121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22100212118.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221002121110 its reverse (11121200122), we get a palindrome (232123321232).

The spelling of 221002121110 in words is "two hundred twenty-one billion, two million, one hundred twenty-one thousand, one hundred ten".