111220220221012 has 24 divisors (see below), whose sum is σ = 222443732288960. Its totient is φ = 47665103270400.

The previous prime is 111220220220943. The next prime is 111220220221037. The reversal of 111220220221012 is 210122022022111.

It is a congruent number.

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, 27463437 + ... + 31251892.

Almost surely, 2^{111220220221012} is an apocalyptic number.

It is an amenable number.

111220220221012 is an abundant number, since it is smaller than the sum of its proper divisors (111223512067948).

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

111220220221012 is a wasteful number, since it uses less digits than its factorization.

111220220221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58782991 (or 58782989 counting only the distinct ones).

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

Adding to 111220220221012 its reverse (210122022022111), we get a palindrome (321342242243123).

The spelling of 111220220221012 in words is "one hundred eleven trillion, two hundred twenty billion, two hundred twenty million, two hundred twenty-one thousand, twelve".