220121022111222 has 32 divisors (see below), whose sum is σ = 440482966831872. Its totient is φ = 73333521408224.

The previous prime is 220121022111209. The next prime is 220121022111247. The reversal of 220121022111222 is 222111220121022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1348509103 + ... + 1348672325.

It is an arithmetic number, because the mean of its divisors is an integer number (13765092713496).

Almost surely, 2^{220121022111222} is an apocalyptic number.

220121022111222 is an abundant number, since it is smaller than the sum of its proper divisors (220361944720650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220121022111222 is a wasteful number, since it uses less digits than its factorization.

220121022111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284852.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 220121022111222 its reverse (222111220121022), we get a palindrome (442232242232244).

The spelling of 220121022111222 in words is "two hundred twenty trillion, one hundred twenty-one billion, twenty-two million, one hundred eleven thousand, two hundred twenty-two".