220221012001212 has 72 divisors (see below), whose sum is σ = 571968899956272. Its totient is φ = 71391300480000.

The previous prime is 220221012001153. The next prime is 220221012001219. The reversal of 220221012001212 is 212100210122022.

It is a happy number.

220221012001212 is a `hidden beast` number, since 220 + 2 + 210 + 1 + 20 + 0 + 1 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221012001219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33725589 + ... + 39722252.

Almost surely, 2^{220221012001212} is an apocalyptic number.

It is an amenable number.

220221012001212 is an abundant number, since it is smaller than the sum of its proper divisors (351747887955060).

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

220221012001212 is a wasteful number, since it uses less digits than its factorization.

220221012001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73450139 (or 73450134 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 220221012001212 its reverse (212100210122022), we get a palindrome (432321222123234).

The spelling of 220221012001212 in words is "two hundred twenty trillion, two hundred twenty-one billion, twelve million, one thousand, two hundred twelve".