4212123434121 has 32 divisors (see below), whose sum is σ = 6262249795200. Its totient is φ = 2502701936640.

The previous prime is 4212123434069. The next prime is 4212123434153. The reversal of 4212123434121 is 1214343212124.

It is a happy number.

It is not a de Polignac number, because 4212123434121 - 2¹⁹ = 4212122909833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4212123434161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1257445 + ... + 3163133.

It is an arithmetic number, because the mean of its divisors is an integer number (195695306100).

Almost surely, 2^{4212123434121} is an apocalyptic number.

It is an amenable number.

4212123434121 is a deficient number, since it is larger than the sum of its proper divisors (2050126361079).

4212123434121 is a wasteful number, since it uses less digits than its factorization.

4212123434121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908009.

The product of its digits is 9216, while the sum is 30.

Adding to 4212123434121 its reverse (1214343212124), we get a palindrome (5426466646245).

The spelling of 4212123434121 in words is "four trillion, two hundred twelve billion, one hundred twenty-three million, four hundred thirty-four thousand, one hundred twenty-one".