1222221112010 has 32 divisors (see below), whose sum is σ = 2330807555520. Its totient is φ = 459854171392.

The previous prime is 1222221111961. The next prime is 1222221112019. The reversal of 1222221112010 is 102111222221.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1222221112010.

It is not an unprimeable number, because it can be changed into a prime (1222221112019) 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, 1873040 + ... + 2439819.

It is an arithmetic number, because the mean of its divisors is an integer number (72837736110).

Almost surely, 2^{1222221112010} is an apocalyptic number.

1222221112010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222221112010 is a deficient number, since it is larger than the sum of its proper divisors (1108586443510).

1222221112010 is a wasteful number, since it uses less digits than its factorization.

1222221112010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4314550.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1222221112010 its reverse (102111222221), we get a palindrome (1324332334231).

The spelling of 1222221112010 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred twelve thousand, ten".