222012121012 has 24 divisors (see below), whose sum is σ = 428037779232. Its totient is φ = 99915444000.

The previous prime is 222012121007. The next prime is 222012121031. The reversal of 222012121012 is 210121210222.

It is a happy number.

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, 24974418 + ... + 24983305.

It is an arithmetic number, because the mean of its divisors is an integer number (17834907468).

Almost surely, 2^222012121012 is an apocalyptic number.

222012121012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

222012121012 is a deficient number, since it is larger than the sum of its proper divisors (206025658220).

222012121012 is a wasteful number, since it uses less digits than its factorization.

222012121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49957839 (or 49957837 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222012121012 its reverse (210121210222), we get a palindrome (432133331234).

The spelling of 222012121012 in words is "two hundred twenty-two billion, twelve million, one hundred twenty-one thousand, twelve".