222111210121012 has 12 divisors (see below), whose sum is σ = 411559006989060. Its totient is φ = 104522922409856.

The previous prime is 222111210120971. The next prime is 222111210121027. The reversal of 222111210121012 is 210121012111222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62132324348836 + 159978885772176 = 7882406^2 + 12648276^2 .

It is a super-2 number, since 2×222111210121012² (a number of 29 digits) contains 22 as substring.

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, 1633170662587 + ... + 1633170662722.

It is an arithmetic number, because the mean of its divisors is an integer number (34296583915755).

Almost surely, 2^{222111210121012} is an apocalyptic number.

It is an amenable number.

222111210121012 is a deficient number, since it is larger than the sum of its proper divisors (189447796868048).

222111210121012 is a wasteful number, since it uses less digits than its factorization.

222111210121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266341325330 (or 3266341325328 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 222111210121012 its reverse (210121012111222), we get a palindrome (432232222232234).

It can be divided in two parts, 222111210 and 121012, that added together give a palindrome (222232222).

The spelling of 222111210121012 in words is "two hundred twenty-two trillion, one hundred eleven billion, two hundred ten million, one hundred twenty-one thousand, twelve".