1222221211101 has 32 divisors (see below), whose sum is σ = 1983784832640. Its totient is φ = 737560944000.

The previous prime is 1222221211063. The next prime is 1222221211139. The reversal of 1222221211101 is 1011121222221.

1222221211101 is a `hidden beast` number, since 1 + 222 + 221 + 211 + 10 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1222221211063) and next prime (1222221211139).

It is a de Polignac number, because none of the positive numbers 2^k-1222221211101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222221215101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8761750 + ... + 8900151.

It is an arithmetic number, because the mean of its divisors is an integer number (61993276020).

Almost surely, 2^{1222221211101} is an apocalyptic number.

1222221211101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222221211101 is a deficient number, since it is larger than the sum of its proper divisors (761563621539).

1222221211101 is a wasteful number, since it uses less digits than its factorization.

1222221211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17662154 (or 17662148 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1222221211101 its reverse (1011121222221), we get a palindrome (2233342433322).

The spelling of 1222221211101 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred eleven thousand, one hundred one".