212121488 has 20 divisors (see below), whose sum is σ = 414126768. Its totient is φ = 105250080.

The previous prime is 212121487. The next prime is 212121509. The reversal of 212121488 is 884121212.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 212121488.

It is not an unprimeable number, because it can be changed into a prime (212121487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48506 + ... + 52697.

Almost surely, 2^212121488 is an apocalyptic number.

It is an amenable number.

212121488 is a deficient number, since it is larger than the sum of its proper divisors (202005280).

212121488 is a wasteful number, since it uses less digits than its factorization.

212121488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101342 (or 101336 counting only the distinct ones).

The product of its digits is 2048, while the sum is 29.

The square root of 212121488 is about 14564.3910960946. The cubic root of 212121488 is about 596.3870734552.

The spelling of 212121488 in words is "two hundred twelve million, one hundred twenty-one thousand, four hundred eighty-eight".