212211210040 has 32 divisors (see below), whose sum is σ = 479456469360. Its totient is φ = 84532262400.

The previous prime is 212211210037. The next prime is 212211210077. The reversal of 212211210040 is 40012112212.

It is a junction number, because it is equal to n+sod(n) for n = 212211209996 and 212211210023.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10997166 + ... + 11016445.

Almost surely, 2^212211210040 is an apocalyptic number.

212211210040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212211210040 is an abundant number, since it is smaller than the sum of its proper divisors (267245259320).

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

212211210040 is a wasteful number, since it uses less digits than its factorization.

212211210040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22013863 (or 22013859 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212211210040 its reverse (40012112212), we get a palindrome (252223322252).

The spelling of 212211210040 in words is "two hundred twelve billion, two hundred eleven million, two hundred ten thousand, forty".