1221102200113 has 2 divisors, whose sum is σ = 1221102200114. Its totient is φ = 1221102200112.

The previous prime is 1221102200089. The next prime is 1221102200117. The reversal of 1221102200113 is 3110022011221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 720160996129 + 500941203984 = 848623^2 + 707772^2 .

It is an emirp because it is prime and its reverse (3110022011221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1221102200113 - 2²¹ = 1221100102961 is a prime.

It is not a weakly prime, because it can be changed into another prime (1221102200117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610551100056 + 610551100057.

It is an arithmetic number, because the mean of its divisors is an integer number (610551100057).

Almost surely, 2^{1221102200113} is an apocalyptic number.

It is an amenable number.

1221102200113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221102200113 is an equidigital number, since it uses as much as digits as its factorization.

1221102200113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1221102200113 its reverse (3110022011221), we get a palindrome (4331124211334).

The spelling of 1221102200113 in words is "one trillion, two hundred twenty-one billion, one hundred two million, two hundred thousand, one hundred thirteen".