2121121210210 has 16 divisors (see below), whose sum is σ = 3818620218816. Its totient is φ = 848314697328.

The previous prime is 2121121210207. The next prime is 2121121210223. The reversal of 2121121210210 is 120121211212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16656744 + ... + 16783603.

It is an arithmetic number, because the mean of its divisors is an integer number (238663763676).

Almost surely, 2^{2121121210210} is an apocalyptic number.

2121121210210 is a deficient number, since it is larger than the sum of its proper divisors (1697499008606).

2121121210210 is a wasteful number, since it uses less digits than its factorization.

2121121210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33446697.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2121121210210 its reverse (120121211212), we get a palindrome (2241242421422).

The spelling of 2121121210210 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred ten thousand, two hundred ten".