212213040 has 160 divisors (see below), whose sum is σ = 750326976. Its totient is φ = 49152000.

The previous prime is 212212999. The next prime is 212213051. The reversal of 212213040 is 40312212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51040 + ... + 55040.

Almost surely, 2^212213040 is an apocalyptic number.

212213040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212213040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375163488).

212213040 is an abundant number, since it is smaller than the sum of its proper divisors (538113936).

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

212213040 is a wasteful number, since it uses less digits than its factorization.

212213040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4047 (or 4041 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 212213040 is about 14567.5337651917. The cubic root of 212213040 is about 596.4728616774.

Adding to 212213040 its reverse (40312212), we get a palindrome (252525252).

The spelling of 212213040 in words is "two hundred twelve million, two hundred thirteen thousand, forty".