22211222220210 has 32 divisors (see below), whose sum is σ = 55145103445440. Its totient is φ = 5718751467968.

The previous prime is 22211222220199. The next prime is 22211222220211. The reversal of 22211222220210 is 1202222211222.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22211222220211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12765069372 + ... + 12765071111.

It is an arithmetic number, because the mean of its divisors is an integer number (1723284482670).

Almost surely, 2^{22211222220210} is an apocalyptic number.

22211222220210 is an abundant number, since it is smaller than the sum of its proper divisors (32933881225230).

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

22211222220210 is a wasteful number, since it uses less digits than its factorization.

22211222220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25530140522.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22211222220210 its reverse (1202222211222), we get a palindrome (23413444431432).

The spelling of 22211222220210 in words is "twenty-two trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twenty thousand, two hundred ten".