221212033230 has 32 divisors (see below), whose sum is σ = 532605096864. Its totient is φ = 58801406976.

The previous prime is 221212033219. The next prime is 221212033249. The reversal of 221212033230 is 32330212122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221212033197 and 221212033206.

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, 11769739 + ... + 11788518.

It is an arithmetic number, because the mean of its divisors is an integer number (16643909277).

Almost surely, 2^221212033230 is an apocalyptic number.

221212033230 is an abundant number, since it is smaller than the sum of its proper divisors (311393063634).

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

221212033230 is a wasteful number, since it uses less digits than its factorization.

221212033230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23558580.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221212033230 its reverse (32330212122), we get a palindrome (253542245352).

The spelling of 221212033230 in words is "two hundred twenty-one billion, two hundred twelve million, thirty-three thousand, two hundred thirty".