221220020012122 has 8 divisors (see below), whose sum is σ = 331863714955872. Its totient is φ = 110598781693500.

The previous prime is 221220020012099. The next prime is 221220020012297. The reversal of 221220020012122 is 221210020022122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221220020012122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5614131654 + ... + 5614171057.

It is an arithmetic number, because the mean of its divisors is an integer number (41482964369484).

Almost surely, 2^{221220020012122} is an apocalyptic number.

221220020012122 is a deficient number, since it is larger than the sum of its proper divisors (110643694943750).

221220020012122 is a wasteful number, since it uses less digits than its factorization.

221220020012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11228312564.

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

Adding to 221220020012122 its reverse (221210020022122), we get a palindrome (442430040034244).

The spelling of 221220020012122 in words is "two hundred twenty-one trillion, two hundred twenty billion, twenty million, twelve thousand, one hundred twenty-two".