214021357 has 16 divisors (see below), whose sum is σ = 240450624. Its totient is φ = 188784000.

The previous prime is 214021343. The next prime is 214021387. The reversal of 214021357 is 753120412.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 214021357 - 2⁷ = 214021229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214021307) 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, 280857 + ... + 281617.

It is an arithmetic number, because the mean of its divisors is an integer number (15028164).

Almost surely, 2^214021357 is an apocalyptic number.

It is an amenable number.

214021357 is a deficient number, since it is larger than the sum of its proper divisors (26429267).

214021357 is a wasteful number, since it uses less digits than its factorization.

214021357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 214021357 is about 14629.4687873484. The cubic root of 214021357 is about 598.1623003278.

Adding to 214021357 its reverse (753120412), we get a palindrome (967141769).

The spelling of 214021357 in words is "two hundred fourteen million, twenty-one thousand, three hundred fifty-seven".