111221221002222 has 32 divisors (see below), whose sum is σ = 236332137837600. Its totient is φ = 34827893993088.

The previous prime is 111221221002169. The next prime is 111221221002223. The reversal of 111221221002222 is 222200122122111.

It is a super-2 number, since 2×111221221002222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221221002223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8637864097 + ... + 8637876972.

It is an arithmetic number, because the mean of its divisors is an integer number (7385379307425).

Almost surely, 2^{111221221002222} is an apocalyptic number.

111221221002222 is an abundant number, since it is smaller than the sum of its proper divisors (125110916835378).

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

111221221002222 is a wasteful number, since it uses less digits than its factorization.

111221221002222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17275741140.

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

Adding to 111221221002222 its reverse (222200122122111), we get a palindrome (333421343124333).

The spelling of 111221221002222 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, two thousand, two hundred twenty-two".