101212102111121 has 4 divisors (see below), whose sum is σ = 101329927609200. Its totient is φ = 101094276613044.

The previous prime is 101212102111079. The next prime is 101212102111147. The reversal of 101212102111121 is 121111201212101.

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 101212102111121 - 2²² = 101212097916817 is a prime.

It is a super-2 number, since 2×101212102111121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101212102111121.

It is not an unprimeable number, because it can be changed into a prime (101212102111151) 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 3 ways as a sum of consecutive naturals, for example, 58912747751 + ... + 58912749468.

It is an arithmetic number, because the mean of its divisors is an integer number (25332481902300).

Almost surely, 2^{101212102111121} is an apocalyptic number.

It is an amenable number.

101212102111121 is a deficient number, since it is larger than the sum of its proper divisors (117825498079).

101212102111121 is an equidigital number, since it uses as much as digits as its factorization.

101212102111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117825498078.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 101212102111121 its reverse (121111201212101), we get a palindrome (222323303323222).

The spelling of 101212102111121 in words is "one hundred one trillion, two hundred twelve billion, one hundred two million, one hundred eleven thousand, one hundred twenty-one".