413121203021 has 4 divisors (see below), whose sum is σ = 413123040252. Its totient is φ = 413119365792.

The previous prime is 413121202993. The next prime is 413121203107. The reversal of 413121203021 is 120302121314.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120302121314 = 2 ⋅60151060657.

It can be written as a sum of positive squares in 2 ways, for example, as 411408070921 + 1713132100 = 641411^2 + 41390^2 .

It is a cyclic number.

It is not a de Polignac number, because 413121203021 - 2¹⁴ = 413121186637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 413121202984 and 413121203002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (413121203221) 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, 525146 + ... + 1049771.

It is an arithmetic number, because the mean of its divisors is an integer number (103280760063).

Almost surely, 2^413121203021 is an apocalyptic number.

It is an amenable number.

413121203021 is a deficient number, since it is larger than the sum of its proper divisors (1837231).

413121203021 is a wasteful number, since it uses less digits than its factorization.

413121203021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837230.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 413121203021 its reverse (120302121314), we get a palindrome (533423324335).

The spelling of 413121203021 in words is "four hundred thirteen billion, one hundred twenty-one million, two hundred three thousand, twenty-one".