221022212430 has 32 divisors (see below), whose sum is σ = 553516498944. Its totient is φ = 56376680096.

The previous prime is 221022212423. The next prime is 221022212443. The reversal of 221022212430 is 34212220122.

It is a junction number, because it is equal to n+sod(n) for n = 221022212397 and 221022212406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160160334 + ... + 160161713.

It is an arithmetic number, because the mean of its divisors is an integer number (17297390592).

Almost surely, 2^221022212430 is an apocalyptic number.

221022212430 is an abundant number, since it is smaller than the sum of its proper divisors (332494286514).

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

221022212430 is a wasteful number, since it uses less digits than its factorization.

221022212430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320322080.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 221022212430 its reverse (34212220122), we get a palindrome (255234432552).

The spelling of 221022212430 in words is "two hundred twenty-one billion, twenty-two million, two hundred twelve thousand, four hundred thirty".