101211202121213 has 4 divisors (see below), whose sum is σ = 101233363545120. Its totient is φ = 101189040697308.

The previous prime is 101211202121189. The next prime is 101211202121221. The reversal of 101211202121213 is 312121202112101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101211202121213 - 2¹² = 101211202117117 is a prime.

It is a super-3 number, since 3×101211202121213³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101211202121233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11080705103 + ... + 11080714236.

It is an arithmetic number, because the mean of its divisors is an integer number (25308340886280).

Almost surely, 2^{101211202121213} is an apocalyptic number.

It is an amenable number.

101211202121213 is a deficient number, since it is larger than the sum of its proper divisors (22161423907).

101211202121213 is an equidigital number, since it uses as much as digits as its factorization.

101211202121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22161423906.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 101211202121213 its reverse (312121202112101), we get a palindrome (413332404233314).

The spelling of 101211202121213 in words is "one hundred one trillion, two hundred eleven billion, two hundred two million, one hundred twenty-one thousand, two hundred thirteen".