210338121 has 8 divisors (see below), whose sum is σ = 320515264. Its totient is φ = 120193200.

The previous prime is 210338119. The next prime is 210338129. The reversal of 210338121 is 121833012.

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

It is not a de Polignac number, because 210338121 - 2¹ = 210338119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 10016101 = 210338121 / (2 + 1 + 0 + 3 + 3 + 8 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210338129) 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, 5008030 + ... + 5008071.

It is an arithmetic number, because the mean of its divisors is an integer number (40064408).

Almost surely, 2^210338121 is an apocalyptic number.

210338121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210338121 is a deficient number, since it is larger than the sum of its proper divisors (110177143).

210338121 is a wasteful number, since it uses less digits than its factorization.

210338121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10016111.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 210338121 is about 14503.0383368451. The cubic root of 210338121 is about 594.7110345077.

The spelling of 210338121 in words is "two hundred ten million, three hundred thirty-eight thousand, one hundred twenty-one".