210213149 has 4 divisors (see below), whose sum is σ = 212141820. Its totient is φ = 208284480.

The previous prime is 210213119. The next prime is 210213151. The reversal of 210213149 is 941312012.

210213149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 162741049 + 47472100 = 12757^2 + 6890^2 .

It is a cyclic number.

It is not a de Polignac number, because 210213149 - 2¹² = 210209053 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 (210213119) 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, 964172 + ... + 964389.

It is an arithmetic number, because the mean of its divisors is an integer number (53035455).

Almost surely, 2^210213149 is an apocalyptic number.

It is an amenable number.

210213149 is a deficient number, since it is larger than the sum of its proper divisors (1928671).

210213149 is a wasteful number, since it uses less digits than its factorization.

210213149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928670.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 210213149 is about 14498.7292201765. The cubic root of 210213149 is about 594.5932290248.

It can be divided in two parts, 2102 and 13149, that added together give a palindrome (15251).

The spelling of 210213149 in words is "two hundred ten million, two hundred thirteen thousand, one hundred forty-nine".