212142104121 has 8 divisors (see below), whose sum is σ = 282859788640. Its totient is φ = 141426244512.

The previous prime is 212142104099. The next prime is 212142104123. The reversal of 212142104121 is 121401241212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212142104121 - 2¹⁵ = 212142071353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212142104123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156931 + ... + 670008.

It is an arithmetic number, because the mean of its divisors is an integer number (35357473580).

Almost surely, 2^212142104121 is an apocalyptic number.

It is an amenable number.

212142104121 is a deficient number, since it is larger than the sum of its proper divisors (70717684519).

212142104121 is an equidigital number, since it uses as much as digits as its factorization.

212142104121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912455.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212142104121 its reverse (121401241212), we get a palindrome (333543345333).

The spelling of 212142104121 in words is "two hundred twelve billion, one hundred forty-two million, one hundred four thousand, one hundred twenty-one".