214102421 has 8 divisors (see below), whose sum is σ = 232121400. Its totient is φ = 196304832.

The previous prime is 214102411. The next prime is 214102433. The reversal of 214102421 is 124201412.

214102421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1234321 + 212868100 = 1111^2 + 14590^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214102421 is a prime.

It is a super-2 number, since 2×214102421² = 91679693356122482, which contains 22 as substring.

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 214102421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214102411) 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, 53330 + ... + 57203.

It is an arithmetic number, because the mean of its divisors is an integer number (29015175).

Almost surely, 2^214102421 is an apocalyptic number.

It is an amenable number.

214102421 is a deficient number, since it is larger than the sum of its proper divisors (18018979).

214102421 is a wasteful number, since it uses less digits than its factorization.

214102421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110695.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 214102421 is about 14632.2390972810. The cubic root of 214102421 is about 598.2378119631.

Adding to 214102421 its reverse (124201412), we get a palindrome (338303833).

The spelling of 214102421 in words is "two hundred fourteen million, one hundred two thousand, four hundred twenty-one".