221233212410420 has 72 divisors (see below), whose sum is σ = 540472988827296. Its totient is φ = 75846916143936.

The previous prime is 221233212410359. The next prime is 221233212410443. The reversal of 221233212410420 is 24014212332122.

221233212410420 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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10002527 + ... + 23291993.

It is an arithmetic number, because the mean of its divisors is an integer number (7506569289268).

Almost surely, 2^{221233212410420} is an apocalyptic number.

221233212410420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221233212410420 is an abundant number, since it is smaller than the sum of its proper divisors (319239776416876).

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

221233212410420 is a wasteful number, since it uses less digits than its factorization.

221233212410420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13306477 (or 13306468 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 221233212410420 its reverse (24014212332122), we get a palindrome (245247424742542).

The spelling of 221233212410420 in words is "two hundred twenty-one trillion, two hundred thirty-three billion, two hundred twelve million, four hundred ten thousand, four hundred twenty".