212127430 has 16 divisors (see below), whose sum is σ = 382253760. Its totient is φ = 84756672.

The previous prime is 212127353. The next prime is 212127463. The reversal of 212127430 is 34721212.

212127430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1950 + ... + 20689.

It is an arithmetic number, because the mean of its divisors is an integer number (23890860).

Almost surely, 2^212127430 is an apocalyptic number.

212127430 is a deficient number, since it is larger than the sum of its proper divisors (170126330).

212127430 is a wasteful number, since it uses less digits than its factorization.

212127430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23583.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 212127430 is about 14564.5950853431. The cubic root of 212127430 is about 596.3926421176.

Adding to 212127430 its reverse (34721212), we get a palindrome (246848642).

The spelling of 212127430 in words is "two hundred twelve million, one hundred twenty-seven thousand, four hundred thirty".