1222212202101 has 24 divisors (see below), whose sum is σ = 1926421982784. Its totient is φ = 740537804160.

The previous prime is 1222212202097. The next prime is 1222212202117. The reversal of 1222212202101 is 1012022122221.

It is a happy number.

1222212202101 is a `hidden beast` number, since 1 + 222 + 212 + 20 + 210 + 1 = 666.

It is not a de Polignac number, because 1222212202101 - 2² = 1222212202097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222212202181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1265716 + ... + 2011581.

It is an arithmetic number, because the mean of its divisors is an integer number (80267582616).

Almost surely, 2^{1222212202101} is an apocalyptic number.

1222212202101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222212202101 is a deficient number, since it is larger than the sum of its proper divisors (704209780683).

1222212202101 is a wasteful number, since it uses less digits than its factorization.

1222212202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3281081 (or 3281078 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1222212202101 its reverse (1012022122221), we get a palindrome (2234234324322).

The spelling of 1222212202101 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, two hundred two thousand, one hundred one".