210454040121 has 8 divisors (see below), whose sum is σ = 302190416640. Its totient is φ = 129510178512.

The previous prime is 210454040119. The next prime is 210454040267. The reversal of 210454040121 is 121040454012.

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

It is not a de Polignac number, because 210454040121 - 2¹ = 210454040119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210454040091 and 210454040100.

It is not an unprimeable number, because it can be changed into a prime (210454044121) 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, 2698128681 + ... + 2698128758.

It is an arithmetic number, because the mean of its divisors is an integer number (37773802080).

Almost surely, 2^210454040121 is an apocalyptic number.

It is an amenable number.

210454040121 is a deficient number, since it is larger than the sum of its proper divisors (91736376519).

210454040121 is a wasteful number, since it uses less digits than its factorization.

210454040121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5396257455.

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 210454040121 its reverse (121040454012), we get a palindrome (331494494133).

The spelling of 210454040121 in words is "two hundred ten billion, four hundred fifty-four million, forty thousand, one hundred twenty-one".