2122042154121 has 12 divisors (see below), whose sum is σ = 3065598226548. Its totient is φ = 1414498049664.

The previous prime is 2122042154083. The next prime is 2122042154131. The reversal of 2122042154121 is 1214512402212.

2122042154121 is a `hidden beast` number, since 2 + 1 + 220 + 4 + 21 + 5 + 412 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 445107802896 + 1676934351225 = 667164^2 + 1294965^2 .

It is not a de Polignac number, because 2122042154121 - 2¹⁹ = 2122041629833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2122042154131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16324980 + ... + 16454453.

It is an arithmetic number, because the mean of its divisors is an integer number (255466518879).

Almost surely, 2^{2122042154121} is an apocalyptic number.

It is an amenable number.

2122042154121 is a deficient number, since it is larger than the sum of its proper divisors (943556072427).

2122042154121 is a wasteful number, since it uses less digits than its factorization.

2122042154121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32786632 (or 32786629 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 2122042154121 its reverse (1214512402212), we get a palindrome (3336554556333).

The spelling of 2122042154121 in words is "two trillion, one hundred twenty-two billion, forty-two million, one hundred fifty-four thousand, one hundred twenty-one".