222121012020112 has 40 divisors (see below), whose sum is σ = 457630408826136. Its totient is φ = 104078919008256.

The previous prime is 222121012020091. The next prime is 222121012020157. The reversal of 222121012020112 is 211020210121222.

It can be written as a sum of positive squares in 4 ways, for example, as 5461924229776 + 216659087790336 = 2337076^2 + 14719344^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 222121012020112.

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, 1752342993 + ... + 1752469744.

Almost surely, 2^{222121012020112} is an apocalyptic number.

It is an amenable number.

222121012020112 is an abundant number, since it is smaller than the sum of its proper divisors (235509396806024).

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

222121012020112 is a wasteful number, since it uses less digits than its factorization.

222121012020112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504812995 (or 3504812989 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222121012020112 its reverse (211020210121222), we get a palindrome (433141222141334).

The spelling of 222121012020112 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, twelve million, twenty thousand, one hundred twelve".