212215254 has 16 divisors (see below), whose sum is σ = 424602480. Its totient is φ = 70709760.

The previous prime is 212215253. The next prime is 212215291. The reversal of 212215254 is 452512212.

212215254 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212215253) 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, 13434 + ... + 24594.

It is an arithmetic number, because the mean of its divisors is an integer number (26537655).

Almost surely, 2^212215254 is an apocalyptic number.

212215254 is an abundant number, since it is smaller than the sum of its proper divisors (212387226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212215254 is a wasteful number, since it uses less digits than its factorization.

212215254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14335.

The product of its digits is 1600, while the sum is 24.

The square root of 212215254 is about 14567.6097558934. The cubic root of 212215254 is about 596.4749359865.

Adding to 212215254 its reverse (452512212), we get a palindrome (664727466).

The spelling of 212215254 in words is "two hundred twelve million, two hundred fifteen thousand, two hundred fifty-four".