1012212201222 has 64 divisors (see below), whose sum is σ = 2273071680000. Its totient is φ = 333864617184.

The previous prime is 1012212201157. The next prime is 1012212201227. The reversal of 1012212201222 is 2221022122101.

It is a happy number.

1012212201222 is a `hidden beast` number, since 1 + 0 + 1 + 221 + 220 + 1 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1012212201195 and 1012212201204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012212201227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1876929 + ... + 2355267.

It is an arithmetic number, because the mean of its divisors is an integer number (35516745000).

Almost surely, 2^{1012212201222} is an apocalyptic number.

1012212201222 is an abundant number, since it is smaller than the sum of its proper divisors (1260859478778).

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

1012212201222 is a wasteful number, since it uses less digits than its factorization.

1012212201222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478762 (or 478756 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1012212201222 its reverse (2221022122101), we get a palindrome (3233234323323).

The spelling of 1012212201222 in words is "one trillion, twelve billion, two hundred twelve million, two hundred one thousand, two hundred twenty-two".