1222221111010 has 16 divisors (see below), whose sum is σ = 2200034993976. Its totient is φ = 488880223488.

The previous prime is 1222221110989. The next prime is 1222221111029. The reversal of 1222221111010 is 101111222221.

It can be written as a sum of positive squares in 4 ways, for example, as 974984432569 + 247236678441 = 987413^2 + 497229^2 .

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, 383997 + ... + 1609936.

Almost surely, 2^{1222221111010} is an apocalyptic number.

1222221111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222221111010 is a deficient number, since it is larger than the sum of its proper divisors (977813882966).

1222221111010 is a wasteful number, since it uses less digits than its factorization.

1222221111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055237.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1222221111010 its reverse (101111222221), we get a palindrome (1323332333231).

It can be divided in two parts, 12222211 and 11010, that added together give a palindrome (12233221).

The spelling of 1222221111010 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred eleven thousand, ten".