222222011221210 has 128 divisors (see below), whose sum is σ = 537757222593024. Its totient is φ = 63853289487360.

The previous prime is 222222011221207. The next prime is 222222011221211. The reversal of 222222011221210 is 12122110222222.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (222222011221211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6621909 + ... + 22097368.

It is an arithmetic number, because the mean of its divisors is an integer number (4201228301508).

Almost surely, 2^{222222011221210} is an apocalyptic number.

222222011221210 is an abundant number, since it is smaller than the sum of its proper divisors (315535211371814).

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

222222011221210 is a wasteful number, since it uses less digits than its factorization.

222222011221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28720088.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 222222011221210 its reverse (12122110222222), we get a palindrome (234344121443432).

The spelling of 222222011221210 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, eleven million, two hundred twenty-one thousand, two hundred ten".