214434240121 has 4 divisors (see below), whose sum is σ = 215231393700. Its totient is φ = 213637086544.

The previous prime is 214434240079. The next prime is 214434240131. The reversal of 214434240121 is 121042434412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87740956521 + 126693283600 = 296211^2 + 355940^2 .

It is a cyclic number.

It is not a de Polignac number, because 214434240121 - 2⁷ = 214434239993 is a prime.

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 214434240121.

It is not an unprimeable number, because it can be changed into a prime (214434240131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398576386 + ... + 398576923.

It is an arithmetic number, because the mean of its divisors is an integer number (53807848425).

Almost surely, 2^214434240121 is an apocalyptic number.

It is an amenable number.

214434240121 is a deficient number, since it is larger than the sum of its proper divisors (797153579).

214434240121 is an equidigital number, since it uses as much as digits as its factorization.

214434240121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797153578.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 214434240121 its reverse (121042434412), we get a palindrome (335476674533).

The spelling of 214434240121 in words is "two hundred fourteen billion, four hundred thirty-four million, two hundred forty thousand, one hundred twenty-one".