212134377 has 36 divisors (see below), whose sum is σ = 356322960. Its totient is φ = 111881952.

The previous prime is 212134361. The next prime is 212134399. The reversal of 212134377 is 773431212.

It is not a de Polignac number, because 212134377 - 2⁴ = 212134361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212134327) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20574 + ... + 29112.

It is an arithmetic number, because the mean of its divisors is an integer number (9897860).

Almost surely, 2^212134377 is an apocalyptic number.

It is an amenable number.

212134377 is a deficient number, since it is larger than the sum of its proper divisors (144188583).

212134377 is a wasteful number, since it uses less digits than its factorization.

212134377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8582 (or 8562 counting only the distinct ones).

The product of its digits is 7056, while the sum is 30.

The square root of 212134377 is about 14564.8335726846. The cubic root of 212134377 is about 596.3991525038.

Adding to 212134377 its reverse (773431212), we get a palindrome (985565589).

The spelling of 212134377 in words is "two hundred twelve million, one hundred thirty-four thousand, three hundred seventy-seven".