222121020221210 has 16 divisors (see below), whose sum is σ = 436164912434592. Its totient is φ = 80771280080400.

The previous prime is 222121020221203. The next prime is 222121020221251. The reversal of 222121020221210 is 12122020121222.

It is a super-2 number, since 2×222121020221210² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1009641000896 + ... + 1009641001115.

It is an arithmetic number, because the mean of its divisors is an integer number (27260307027162).

Almost surely, 2^{222121020221210} is an apocalyptic number.

222121020221210 is a deficient number, since it is larger than the sum of its proper divisors (214043892213382).

222121020221210 is a wasteful number, since it uses less digits than its factorization.

222121020221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019282002029.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222121020221210 its reverse (12122020121222), we get a palindrome (234243040342432).

The spelling of 222121020221210 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, twenty million, two hundred twenty-one thousand, two hundred ten".