221011201220212 has 96 divisors (see below), whose sum is σ = 436045259865600. Its totient is φ = 97356073651200.

The previous prime is 221011201220189. The next prime is 221011201220233. The reversal of 221011201220212 is 212022102110122.

It is a self number, because there is not a number n which added to its sum of digits gives 221011201220212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12339387 + ... + 24377917.

It is an arithmetic number, because the mean of its divisors is an integer number (4542138123600).

Almost surely, 2^{221011201220212} is an apocalyptic number.

It is an amenable number.

221011201220212 is a deficient number, since it is larger than the sum of its proper divisors (215034058645388).

221011201220212 is a wasteful number, since it uses less digits than its factorization.

221011201220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12038777 (or 12038775 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221011201220212 its reverse (212022102110122), we get a palindrome (433033303330334).

The spelling of 221011201220212 in words is "two hundred twenty-one trillion, eleven billion, two hundred one million, two hundred twenty thousand, two hundred twelve".