221122202122 has 32 divisors (see below), whose sum is σ = 369193305600. Its totient is φ = 98891020800.

The previous prime is 221122202117. The next prime is 221122202131. The reversal of 221122202122 is 221202221122.

221122202122 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 221122202122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2240847 + ... + 2337442.

It is an arithmetic number, because the mean of its divisors is an integer number (11537290800).

Almost surely, 2^221122202122 is an apocalyptic number.

221122202122 is a deficient number, since it is larger than the sum of its proper divisors (148071103478).

221122202122 is a wasteful number, since it uses less digits than its factorization.

221122202122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4578382.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221122202122 its reverse (221202221122), we get a palindrome (442324423244).

The spelling of 221122202122 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred two thousand, one hundred twenty-two".