2121403031434 has 8 divisors (see below), whose sum is σ = 3182549058720. Its totient is φ = 1060553345196.

The previous prime is 2121403031431. The next prime is 2121403031441. The reversal of 2121403031434 is 4341303041212.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (2121403031431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74067364 + ... + 74095999.

It is an arithmetic number, because the mean of its divisors is an integer number (397818632340).

Almost surely, 2^{2121403031434} is an apocalyptic number.

2121403031434 is a deficient number, since it is larger than the sum of its proper divisors (1061146027286).

2121403031434 is a wasteful number, since it uses less digits than its factorization.

2121403031434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148170524.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 2121403031434 its reverse (4341303041212), we get a palindrome (6462706072646).

The spelling of 2121403031434 in words is "two trillion, one hundred twenty-one billion, four hundred three million, thirty-one thousand, four hundred thirty-four".