1213201202101 has 16 divisors (see below), whose sum is σ = 1410067975680. Its totient is φ = 1022223809520.

The previous prime is 1213201202089. The next prime is 1213201202111. The reversal of 1213201202101 is 1012021023121.

It is a de Polignac number, because none of the positive numbers 2^k-1213201202101 is a prime.

It is a super-2 number, since 2×1213201202101² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213201202111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21756666 + ... + 21812356.

It is an arithmetic number, because the mean of its divisors is an integer number (88129248480).

Almost surely, 2^{1213201202101} is an apocalyptic number.

It is an amenable number.

1213201202101 is a deficient number, since it is larger than the sum of its proper divisors (196866773579).

1213201202101 is an equidigital number, since it uses as much as digits as its factorization.

1213201202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108504.

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

Adding to 1213201202101 its reverse (1012021023121), we get a palindrome (2225222225222).

The spelling of 1213201202101 in words is "one trillion, two hundred thirteen billion, two hundred one million, two hundred two thousand, one hundred one".