220221312231122 has 4 divisors (see below), whose sum is σ = 330331968346686. Its totient is φ = 110110656115560.

The previous prime is 220221312231119. The next prime is 220221312231143. The reversal of 220221312231122 is 221132213122022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 219990567462241 + 230744768881 = 14832079^2 + 480359^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220221312231091 and 220221312231100.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055328057779 + ... + 55055328057782.

Almost surely, 2^{220221312231122} is an apocalyptic number.

220221312231122 is a deficient number, since it is larger than the sum of its proper divisors (110110656115564).

220221312231122 is a wasteful number, since it uses less digits than its factorization.

220221312231122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110110656115563.

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

Adding to 220221312231122 its reverse (221132213122022), we get a palindrome (441353525353144).

The spelling of 220221312231122 in words is "two hundred twenty trillion, two hundred twenty-one billion, three hundred twelve million, two hundred thirty-one thousand, one hundred twenty-two".