1212222000204 has 72 divisors (see below), whose sum is σ = 3095209248768. Its totient is φ = 399994264800.

The previous prime is 1212222000191. The next prime is 1212222000217. The reversal of 1212222000204 is 4020002222121.

It is an interprime number because it is at equal distance from previous prime (1212222000191) and next prime (1212222000217).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4993029 + ... + 5230179.

It is an arithmetic number, because the mean of its divisors is an integer number (42989017344).

Almost surely, 2^{1212222000204} is an apocalyptic number.

It is an amenable number.

1212222000204 is an abundant number, since it is smaller than the sum of its proper divisors (1882987248564).

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

1212222000204 is a wasteful number, since it uses less digits than its factorization.

1212222000204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238595 (or 238590 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1212222000204 its reverse (4020002222121), we get a palindrome (5232224222325).

The spelling of 1212222000204 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, two hundred four", and thus it is an aban number.