221121202121122 has 16 divisors (see below), whose sum is σ = 346103118839232. Its totient is φ = 105753506055120.

The previous prime is 221121202121093. The next prime is 221121202121159.

221121202121122 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 221121202121093 and 221121202121102.

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 7 ways as a sum of consecutive naturals, for example, 55320988 + ... + 59183224.

It is an arithmetic number, because the mean of its divisors is an integer number (21631444927452).

Almost surely, 2^{221121202121122} is an apocalyptic number.

221121202121122 is a deficient number, since it is larger than the sum of its proper divisors (124981916718110).

221121202121122 is a wasteful number, since it uses less digits than its factorization.

221121202121122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106873.

The product of its (nonzero) digits is 256, while the sum is 22.

It can be divided in two parts, 22112120 and 2121122, that added together give a palindrome (24233242).

The spelling of 221121202121122 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, two hundred two million, one hundred twenty-one thousand, one hundred twenty-two".