222211020201210 has 80 divisors (see below), whose sum is σ = 598647578784552. Its totient is φ = 59142536294400.

The previous prime is 222211020201187. The next prime is 222211020201211. The reversal of 222211020201210 is 12102020112222.

It is a happy number.

222211020201210 is a `hidden beast` number, since 2 + 2 + 221 + 10 + 20 + 201 + 210 = 666.

222211020201210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 132177812853321 + 90033207347889 = 11496861^2 + 9488583^2 .

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

It is not an unprimeable number, because it can be changed into a prime (222211020201211) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 262854951 + ... + 263698970.

Almost surely, 2^{222211020201210} is an apocalyptic number.

222211020201210 is an abundant number, since it is smaller than the sum of its proper divisors (376436558583342).

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

222211020201210 is a wasteful number, since it uses less digits than its factorization.

222211020201210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526554461 (or 526554452 counting only the distinct ones).

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

Adding to 222211020201210 its reverse (12102020112222), we get a palindrome (234313040313432).

The spelling of 222211020201210 in words is "two hundred twenty-two trillion, two hundred eleven billion, twenty million, two hundred one thousand, two hundred ten".