221213202312122 has 16 divisors (see below), whose sum is σ = 331973701741440. Its totient is φ = 110555305290528.

The previous prime is 221213202312101. The next prime is 221213202312227.

221213202312122 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 221213202312091 and 221213202312100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125520254 + ... + 127270422.

It is an arithmetic number, because the mean of its divisors is an integer number (20748356358840).

Almost surely, 2^{221213202312122} is an apocalyptic number.

221213202312122 is a deficient number, since it is larger than the sum of its proper divisors (110760499429318).

221213202312122 is a wasteful number, since it uses less digits than its factorization.

221213202312122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779445.

The product of its (nonzero) digits is 2304, while the sum is 26.

It can be divided in two parts, 22121320 and 2312122, that added together give a palindrome (24433442).

The spelling of 221213202312122 in words is "two hundred twenty-one trillion, two hundred thirteen billion, two hundred two million, three hundred twelve thousand, one hundred twenty-two".