212040220430 has 8 divisors (see below), whose sum is σ = 381672396792. Its totient is φ = 84816088168.

The previous prime is 212040220411. The next prime is 212040220471. The reversal of 212040220430 is 34022040212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×212040220430² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10602011012 + ... + 10602011031.

It is an arithmetic number, because the mean of its divisors is an integer number (47709049599).

Almost surely, 2^212040220430 is an apocalyptic number.

212040220430 is a deficient number, since it is larger than the sum of its proper divisors (169632176362).

212040220430 is a wasteful number, since it uses less digits than its factorization.

212040220430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21204022050.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 212040220430 its reverse (34022040212), we get a palindrome (246062260642).

The spelling of 212040220430 in words is "two hundred twelve billion, forty million, two hundred twenty thousand, four hundred thirty".