2121452455351 has 4 divisors (see below), whose sum is σ = 2246243776272. Its totient is φ = 1996661134432.

The previous prime is 2121452455321. The next prime is 2121452455357. The reversal of 2121452455351 is 1535542541212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2121452455351 - 2⁷ = 2121452455223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121452455357) 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, 62395660435 + ... + 62395660468.

It is an arithmetic number, because the mean of its divisors is an integer number (561560944068).

Almost surely, 2^{2121452455351} is an apocalyptic number.

2121452455351 is a deficient number, since it is larger than the sum of its proper divisors (124791320921).

2121452455351 is a wasteful number, since it uses less digits than its factorization.

2121452455351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124791320920.

The product of its digits is 240000, while the sum is 40.

Adding to 2121452455351 its reverse (1535542541212), we get a palindrome (3656994996563).

The spelling of 2121452455351 in words is "two trillion, one hundred twenty-one billion, four hundred fifty-two million, four hundred fifty-five thousand, three hundred fifty-one".