2121212111110 has 64 divisors (see below), whose sum is σ = 4060930749120. Its totient is φ = 795477196800.

The previous prime is 2121212111069. The next prime is 2121212111197. The reversal of 2121212111110 is 111112121212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40522314 + ... + 40574626.

It is an arithmetic number, because the mean of its divisors is an integer number (63452042955).

Almost surely, 2^{2121212111110} is an apocalyptic number.

2121212111110 is a deficient number, since it is larger than the sum of its proper divisors (1939718638010).

2121212111110 is a wasteful number, since it uses less digits than its factorization.

2121212111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54553.

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

Adding to 2121212111110 its reverse (111112121212), we get a palindrome (2232324232322).

It can be divided in two parts, 2121212 and 111110, that added together give a palindrome (2232322).

The spelling of 2121212111110 in words is "two trillion, one hundred twenty-one billion, two hundred twelve million, one hundred eleven thousand, one hundred ten".