2112210121211 has 8 divisors (see below), whose sum is σ = 2114732430720. Its totient is φ = 2109689310592.

The previous prime is 2112210121171. The next prime is 2112210121237. The reversal of 2112210121211 is 1121210122112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112210121211 is a prime.

It is a super-2 number, since 2×2112210121211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2112210121211.

It is not an unprimeable number, because it can be changed into a prime (2112210123211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2458085 + ... + 3204153.

It is an arithmetic number, because the mean of its divisors is an integer number (264341553840).

Almost surely, 2^{2112210121211} is an apocalyptic number.

2112210121211 is a deficient number, since it is larger than the sum of its proper divisors (2522309509).

2112210121211 is a wasteful number, since it uses less digits than its factorization.

2112210121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749445.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2112210121211 its reverse (1121210122112), we get a palindrome (3233420243323).

Subtracting from 2112210121211 its reverse (1121210122112), we obtain a palindrome (990999999099).

The spelling of 2112210121211 in words is "two trillion, one hundred twelve billion, two hundred ten million, one hundred twenty-one thousand, two hundred eleven".