214121015421 has 16 divisors (see below), whose sum is σ = 287262987648. Its totient is φ = 141865920000.

The previous prime is 214121015419. The next prime is 214121015429. The reversal of 214121015421 is 124510121412.

It is not a de Polignac number, because 214121015421 - 2¹ = 214121015419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 214121015391 and 214121015400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214121015429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26080 + ... + 654921.

It is an arithmetic number, because the mean of its divisors is an integer number (17953936728).

Almost surely, 2^214121015421 is an apocalyptic number.

It is an amenable number.

214121015421 is a deficient number, since it is larger than the sum of its proper divisors (73141972227).

214121015421 is a wasteful number, since it uses less digits than its factorization.

214121015421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681652.

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 214121015421 its reverse (124510121412), we get a palindrome (338631136833).

The spelling of 214121015421 in words is "two hundred fourteen billion, one hundred twenty-one million, fifteen thousand, four hundred twenty-one".