4243212014121 has 32 divisors (see below), whose sum is σ = 6656616679680. Its totient is φ = 2662168405248.

The previous prime is 4243212014081. The next prime is 4243212014149. The reversal of 4243212014121 is 1214102123424.

4243212014121 is a `hidden beast` number, since 4 + 2 + 43 + 2 + 1 + 201 + 412 + 1 = 666.

It is not a de Polignac number, because 4243212014121 - 2¹⁹ = 4243211489833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4243212014221) 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, 4771215 + ... + 5590251.

It is an arithmetic number, because the mean of its divisors is an integer number (208019271240).

Almost surely, 2^{4243212014121} is an apocalyptic number.

It is an amenable number.

4243212014121 is a deficient number, since it is larger than the sum of its proper divisors (2413404665559).

4243212014121 is a wasteful number, since it uses less digits than its factorization.

4243212014121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830350 (or 830344 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 4243212014121 its reverse (1214102123424), we get a palindrome (5457314137545).

The spelling of 4243212014121 in words is "four trillion, two hundred forty-three billion, two hundred twelve million, fourteen thousand, one hundred twenty-one".