1211221202002 has 32 divisors (see below), whose sum is σ = 2081063952000. Its totient is φ = 517924143360.

The previous prime is 1211221201999. The next prime is 1211221202011. The reversal of 1211221202002 is 2002021221121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30865498 + ... + 30904714.

It is an arithmetic number, because the mean of its divisors is an integer number (65033248500).

Almost surely, 2^{1211221202002} is an apocalyptic number.

1211221202002 is a deficient number, since it is larger than the sum of its proper divisors (869842749998).

1211221202002 is a wasteful number, since it uses less digits than its factorization.

1211221202002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44146.

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

Adding to 1211221202002 its reverse (2002021221121), we get a palindrome (3213242423123).

The spelling of 1211221202002 in words is "one trillion, two hundred eleven billion, two hundred twenty-one million, two hundred two thousand, two".