1211212220002 has 64 divisors (see below), whose sum is σ = 1898899200000. Its totient is φ = 578989253952.

The previous prime is 1211212219981. The next prime is 1211212220027. The reversal of 1211212220002 is 2000222121121.

It is a happy 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 31 ways as a sum of consecutive naturals, for example, 744444313 + ... + 744445939.

It is an arithmetic number, because the mean of its divisors is an integer number (29670300000).

Almost surely, 2^{1211212220002} is an apocalyptic number.

1211212220002 is a deficient number, since it is larger than the sum of its proper divisors (687686979998).

1211212220002 is a wasteful number, since it uses less digits than its factorization.

1211212220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1211212220002 its reverse (2000222121121), we get a palindrome (3211434341123).

The spelling of 1211212220002 in words is "one trillion, two hundred eleven billion, two hundred twelve million, two hundred twenty thousand, two".