2121001220002 has 32 divisors (see below), whose sum is σ = 3827812682880. Its totient is φ = 861058926720.

The previous prime is 2121001219951. The next prime is 2121001220003. The reversal of 2121001220002 is 2000221001212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2121001220003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1868998 + ... + 2781214.

It is an arithmetic number, because the mean of its divisors is an integer number (119619146340).

Almost surely, 2^{2121001220002} is an apocalyptic number.

2121001220002 is a deficient number, since it is larger than the sum of its proper divisors (1706811462878).

2121001220002 is a wasteful number, since it uses less digits than its factorization.

2121001220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920986.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2121001220002 its reverse (2000221001212), we get a palindrome (4121222221214).

The spelling of 2121001220002 in words is "two trillion, one hundred twenty-one billion, one million, two hundred twenty thousand, two".