222220121221012 has 12 divisors (see below), whose sum is σ = 388885679631540. Its totient is φ = 111109927040576.

The previous prime is 222220121220971. The next prime is 222220121221073. The reversal of 222220121221012 is 210122121022222.

222220121221012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 73360698187396 + 148859423033616 = 8565086^2 + 12200796^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29601337 + ... + 36341152.

It is an arithmetic number, because the mean of its divisors is an integer number (32407139969295).

Almost surely, 2^{222220121221012} is an apocalyptic number.

It is an amenable number.

222220121221012 is a deficient number, since it is larger than the sum of its proper divisors (166665558410528).

222220121221012 is a wasteful number, since it uses less digits than its factorization.

222220121221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66784970 (or 66784968 counting only the distinct ones).

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

Adding to 222220121221012 its reverse (210122121022222), we get a palindrome (432342242243234).

The spelling of 222220121221012 in words is "two hundred twenty-two trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty-one thousand, twelve".