210421250045 has 16 divisors (see below), whose sum is σ = 257297980032. Its totient is φ = 165142710720.

The previous prime is 210421249921. The next prime is 210421250071. The reversal of 210421250045 is 540052124012.

It is not a de Polignac number, because 210421250045 - 2¹² = 210421245949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210421249996 and 210421250023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2702510 + ... + 2779280.

It is an arithmetic number, because the mean of its divisors is an integer number (16081123752).

Almost surely, 2^210421250045 is an apocalyptic number.

It is an amenable number.

210421250045 is a deficient number, since it is larger than the sum of its proper divisors (46876729987).

210421250045 is a wasteful number, since it uses less digits than its factorization.

210421250045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87172.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 210421250045 its reverse (540052124012), we get a palindrome (750473374057).

The spelling of 210421250045 in words is "two hundred ten billion, four hundred twenty-one million, two hundred fifty thousand, forty-five".