1222220021110 has 48 divisors (see below), whose sum is σ = 2418778072368. Its totient is φ = 444333257280.

The previous prime is 1222220021059. The next prime is 1222220021111. The reversal of 1222220021110 is 111200222221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222220021111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4829137 + ... + 5075923.

It is an arithmetic number, because the mean of its divisors is an integer number (50391209841).

Almost surely, 2^{1222220021110} is an apocalyptic number.

1222220021110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222220021110 is a deficient number, since it is larger than the sum of its proper divisors (1196558051258).

1222220021110 is a wasteful number, since it uses less digits than its factorization.

1222220021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250909 (or 250898 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1222220021110 its reverse (111200222221), we get a palindrome (1333420243331).

The spelling of 1222220021110 in words is "one trillion, two hundred twenty-two billion, two hundred twenty million, twenty-one thousand, one hundred ten".