1212210202004 has 12 divisors (see below), whose sum is σ = 2178702120084. Its totient is φ = 589723881984.

The previous prime is 1212210202001. The next prime is 1212210202009. The reversal of 1212210202004 is 4002020122121.

It can be written as a sum of positive squares in 2 ways, for example, as 620710773904 + 591499428100 = 787852^2 + 769090^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212210202001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4095304589 + ... + 4095304884.

It is an arithmetic number, because the mean of its divisors is an integer number (181558510007).

Almost surely, 2^{1212210202004} is an apocalyptic number.

It is an amenable number.

1212210202004 is a deficient number, since it is larger than the sum of its proper divisors (966491918080).

1212210202004 is a wasteful number, since it uses less digits than its factorization.

1212210202004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8190609514 (or 8190609512 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1212210202004 its reverse (4002020122121), we get a palindrome (5214230324125).

The spelling of 1212210202004 in words is "one trillion, two hundred twelve billion, two hundred ten million, two hundred two thousand, four".