221221020122110 has 8 divisors (see below), whose sum is σ = 398197836219816. Its totient is φ = 88488408048840.

The previous prime is 221221020122059. The next prime is 221221020122129. The reversal of 221221020122110 is 11221020122122.

221221020122110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 11061051006096 + ... + 11061051006115.

It is an arithmetic number, because the mean of its divisors is an integer number (49774729527477).

Almost surely, 2^{221221020122110} is an apocalyptic number.

221221020122110 is a deficient number, since it is larger than the sum of its proper divisors (176976816097706).

221221020122110 is a wasteful number, since it uses less digits than its factorization.

221221020122110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22122102012218.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221221020122110 its reverse (11221020122122), we get a palindrome (232442040244232).

The spelling of 221221020122110 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, twenty million, one hundred twenty-two thousand, one hundred ten".