212210431040 has 112 divisors (see below), whose sum is σ = 529799702400. Its totient is φ = 80808161280.

The previous prime is 212210431033. The next prime is 212210431049. The reversal of 212210431040 is 40134012212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (212210431049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1484636 + ... + 1621284.

Almost surely, 2^212210431040 is an apocalyptic number.

212210431040 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 212210431040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264899851200).

212210431040 is an abundant number, since it is smaller than the sum of its proper divisors (317589271360).

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

212210431040 is a wasteful number, since it uses less digits than its factorization.

212210431040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136900 (or 136890 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 212210431040 its reverse (40134012212), we get a palindrome (252344443252).

The spelling of 212210431040 in words is "two hundred twelve billion, two hundred ten million, four hundred thirty-one thousand, forty".