221212010112022 has 4 divisors (see below), whose sum is σ = 331818015168036. Its totient is φ = 110606005056010.

The previous prime is 221212010111999. The next prime is 221212010112029. The reversal of 221212010112022 is 220211010212122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221212010112029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55303002528004 + ... + 55303002528007.

It is an arithmetic number, because the mean of its divisors is an integer number (82954503792009).

Almost surely, 2^{221212010112022} is an apocalyptic number.

221212010112022 is a deficient number, since it is larger than the sum of its proper divisors (110606005056014).

221212010112022 is a wasteful number, since it uses less digits than its factorization.

221212010112022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110606005056013.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221212010112022 its reverse (220211010212122), we get a palindrome (441423020324144).

The spelling of 221212010112022 in words is "two hundred twenty-one trillion, two hundred twelve billion, ten million, one hundred twelve thousand, twenty-two".