2121120011211 has 16 divisors (see below), whose sum is σ = 2886430546944. Its totient is φ = 1385035649504.

The previous prime is 2121120011191. The next prime is 2121120011221. The reversal of 2121120011211 is 1121100211212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2121120011211 - 2³⁰ = 2120046269387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121120011221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11269851 + ... + 11456516.

It is an arithmetic number, because the mean of its divisors is an integer number (180401909184).

Almost surely, 2^{2121120011211} is an apocalyptic number.

2121120011211 is a deficient number, since it is larger than the sum of its proper divisors (765310535733).

2121120011211 is a wasteful number, since it uses less digits than its factorization.

2121120011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22727010.

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

Adding to 2121120011211 its reverse (1121100211212), we get a palindrome (3242220222423).

The spelling of 2121120011211 in words is "two trillion, one hundred twenty-one billion, one hundred twenty million, eleven thousand, two hundred eleven".