2111212111210 has 64 divisors (see below), whose sum is σ = 3902243374368. Its totient is φ = 822096000000.

The previous prime is 2111212111207. The next prime is 2111212111213. The reversal of 2111212111210 is 121112121112.

It is an interprime number because it is at equal distance from previous prime (2111212111207) and next prime (2111212111213).

It can be written as a sum of positive squares in 16 ways, for example, as 387061912449 + 1724150198761 = 622143^2 + 1313069^2 .

It is not an unprimeable number, because it can be changed into a prime (2111212111213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213227260 + ... + 213237160.

Almost surely, 2^{2111212111210} is an apocalyptic number.

2111212111210 is a deficient number, since it is larger than the sum of its proper divisors (1791031263158).

2111212111210 is a wasteful number, since it uses less digits than its factorization.

2111212111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13531.

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

Adding to 2111212111210 its reverse (121112121112), we get a palindrome (2232324232322).

The spelling of 2111212111210 in words is "two trillion, one hundred eleven billion, two hundred twelve million, one hundred eleven thousand, two hundred ten".