12121010222222 has 16 divisors (see below), whose sum is σ = 19837693487232. Its totient is φ = 5508629788920.

The previous prime is 12121010222207. The next prime is 12121010222239. The reversal of 12121010222222 is 22222201012121.

It is a junction number, because it is equal to n+sod(n) for n = 12121010222194 and 12121010222203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45880898 + ... + 46144325.

It is an arithmetic number, because the mean of its divisors is an integer number (1239855842952).

Almost surely, 2^{12121010222222} is an apocalyptic number.

12121010222222 is a deficient number, since it is larger than the sum of its proper divisors (7716683265010).

12121010222222 is a wasteful number, since it uses less digits than its factorization.

12121010222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92031223.

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

Adding to 12121010222222 its reverse (22222201012121), we get a palindrome (34343211234343).

The spelling of 12121010222222 in words is "twelve trillion, one hundred twenty-one billion, ten million, two hundred twenty-two thousand, two hundred twenty-two".