1222100001012 has 24 divisors (see below), whose sum is σ = 3110800002912. Its totient is φ = 370333333600.

The previous prime is 1222100001011. The next prime is 1222100001037. The reversal of 1222100001012 is 2101000012221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222100001011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4629166539 + ... + 4629166802.

It is an arithmetic number, because the mean of its divisors is an integer number (129616666788).

Almost surely, 2^{1222100001012} is an apocalyptic number.

1222100001012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222100001012 is an abundant number, since it is smaller than the sum of its proper divisors (1888700001900).

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

1222100001012 is a wasteful number, since it uses less digits than its factorization.

1222100001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9258333359 (or 9258333357 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1222100001012 its reverse (2101000012221), we get a palindrome (3323100013233).

The spelling of 1222100001012 in words is "one trillion, two hundred twenty-two billion, one hundred million, one thousand, twelve".