1212210022104 has 48 divisors (see below), whose sum is σ = 3284150425920. Its totient is φ = 403936885440.

The previous prime is 1212210022097. The next prime is 1212210022157. The reversal of 1212210022104 is 4012200122121.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2553192 + ... + 2990519.

It is an arithmetic number, because the mean of its divisors is an integer number (68419800540).

Almost surely, 2^{1212210022104} is an apocalyptic number.

It is an amenable number.

1212210022104 is an abundant number, since it is smaller than the sum of its proper divisors (2071940403816).

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

1212210022104 is a wasteful number, since it uses less digits than its factorization.

1212210022104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5546760 (or 5546753 counting only the distinct ones).

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

Adding to 1212210022104 its reverse (4012200122121), we get a palindrome (5224410144225).

The spelling of 1212210022104 in words is "one trillion, two hundred twelve billion, two hundred ten million, twenty-two thousand, one hundred four".