2120102211111 has 8 divisors (see below), whose sum is σ = 2826899120880. Its totient is φ = 1413353387712.

The previous prime is 2120102211091. The next prime is 2120102211131. The reversal of 2120102211111 is 1111122010212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2120102211091) and next prime (2120102211131).

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

It is not a de Polignac number, because 2120102211111 - 2⁹ = 2120102210599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120102211131) 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, 11918590 + ... + 12095163.

It is an arithmetic number, because the mean of its divisors is an integer number (353362390110).

Almost surely, 2^{2120102211111} is an apocalyptic number.

2120102211111 is a deficient number, since it is larger than the sum of its proper divisors (706796909769).

2120102211111 is a wasteful number, since it uses less digits than its factorization.

2120102211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24043185.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2120102211111 its reverse (1111122010212), we get a palindrome (3231224221323).

The spelling of 2120102211111 in words is "two trillion, one hundred twenty billion, one hundred two million, two hundred eleven thousand, one hundred eleven".