212112220011121 has 4 divisors (see below), whose sum is σ = 212164892530672. Its totient is φ = 212059547491572.

The previous prime is 212112220011113. The next prime is 212112220011127. The reversal of 212112220011121 is 121110022211212.

It is a happy number.

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 212112220011121 - 2³ = 212112220011113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212112220011127) 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, 26336253735 + ... + 26336261788.

It is an arithmetic number, because the mean of its divisors is an integer number (53041223132668).

Almost surely, 2^{212112220011121} is an apocalyptic number.

It is an amenable number.

212112220011121 is a deficient number, since it is larger than the sum of its proper divisors (52672519551).

212112220011121 is an equidigital number, since it uses as much as digits as its factorization.

212112220011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52672519550.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212112220011121 its reverse (121110022211212), we get a palindrome (333222242222333).

The spelling of 212112220011121 in words is "two hundred twelve trillion, one hundred twelve billion, two hundred twenty million, eleven thousand, one hundred twenty-one".