2101221211210 has 16 divisors (see below), whose sum is σ = 4126034378592. Its totient is φ = 764080440400.

The previous prime is 2101221211139. The next prime is 2101221211249. The reversal of 2101221211210 is 121121221012.

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, 9551005396 + ... + 9551005615.

It is an arithmetic number, because the mean of its divisors is an integer number (257877148662).

Almost surely, 2^{2101221211210} is an apocalyptic number.

2101221211210 is a deficient number, since it is larger than the sum of its proper divisors (2024813167382).

2101221211210 is a wasteful number, since it uses less digits than its factorization.

2101221211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19102011029.

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

Adding to 2101221211210 its reverse (121121221012), we get a palindrome (2222342432222).

The spelling of 2101221211210 in words is "two trillion, one hundred one billion, two hundred twenty-one million, two hundred eleven thousand, two hundred ten".