2121442311 has 8 divisors (see below), whose sum is σ = 2828813040. Its totient is φ = 1414183232.

The previous prime is 2121442303. The next prime is 2121442331. The reversal of 2121442311 is 1132441212.

2121442311 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2121442311 - 2³ = 2121442303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121442331) 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, 40105 + ... + 76493.

It is an arithmetic number, because the mean of its divisors is an integer number (353601630).

Almost surely, 2^2121442311 is an apocalyptic number.

2121442311 is a deficient number, since it is larger than the sum of its proper divisors (707370729).

2121442311 is a wasteful number, since it uses less digits than its factorization.

2121442311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55825.

The product of its digits is 384, while the sum is 21.

The square root of 2121442311 is about 46059.1175664493. The cubic root of 2121442311 is about 1284.9229184587.

Adding to 2121442311 its reverse (1132441212), we get a palindrome (3253883523).

The spelling of 2121442311 in words is "two billion, one hundred twenty-one million, four hundred forty-two thousand, three hundred eleven".