1212211100004 has 24 divisors (see below), whose sum is σ = 2888673260928. Its totient is φ = 395473124640.

The previous prime is 1212211100003. The next prime is 1212211100017. The reversal of 1212211100004 is 4000011122121.

It is not an unprimeable number, because it can be changed into a prime (1212211100003) 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, 1074654667 + ... + 1074655794.

It is an arithmetic number, because the mean of its divisors is an integer number (120361385872).

Almost surely, 2^{1212211100004} is an apocalyptic number.

It is an amenable number.

1212211100004 is an abundant number, since it is smaller than the sum of its proper divisors (1676462160924).

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

1212211100004 is a wasteful number, since it uses less digits than its factorization.

1212211100004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149310515 (or 2149310513 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212211100004 its reverse (4000011122121), we get a palindrome (5212222222125).

The spelling of 1212211100004 in words is "one trillion, two hundred twelve billion, two hundred eleven million, one hundred thousand, four".