2121122701442 has 16 divisors (see below), whose sum is σ = 3349174500000. Its totient is φ = 1004732314560.

The previous prime is 2121122701417. The next prime is 2121122701447. The reversal of 2121122701442 is 2441072211212.

It is not an unprimeable number, because it can be changed into a prime (2121122701447) 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, 4774817 + ... + 5200107.

It is an arithmetic number, because the mean of its divisors is an integer number (209323406250).

Almost surely, 2^{2121122701442} is an apocalyptic number.

2121122701442 is a deficient number, since it is larger than the sum of its proper divisors (1228051798558).

2121122701442 is a wasteful number, since it uses less digits than its factorization.

2121122701442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556561.

The product of its (nonzero) digits is 3584, while the sum is 29.

Adding to 2121122701442 its reverse (2441072211212), we get a palindrome (4562194912654).

The spelling of 2121122701442 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-two million, seven hundred one thousand, four hundred forty-two".