212122040 has 48 divisors (see below), whose sum is σ = 516828600. Its totient is φ = 78319488.

The previous prime is 212122019. The next prime is 212122049. The reversal of 212122040 is 40221212.

212122040 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 (212122049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8930 + ... + 22449.

Almost surely, 2^212122040 is an apocalyptic number.

212122040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212122040 is an abundant number, since it is smaller than the sum of its proper divisors (304706560).

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

212122040 is a wasteful number, since it uses less digits than its factorization.

212122040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31416 (or 31399 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 212122040 is about 14564.4100464111. The cubic root of 212122040 is about 596.3875907772.

Adding to 212122040 its reverse (40221212), we get a palindrome (252343252).

The spelling of 212122040 in words is "two hundred twelve million, one hundred twenty-two thousand, forty".