5215430121 has 32 divisors (see below), whose sum is σ = 7657555968. Its totient is φ = 3131187840.

The previous prime is 5215430089. The next prime is 5215430123. The reversal of 5215430121 is 1210345125.

It is a happy number.

It is not a de Polignac number, because 5215430121 - 2⁵ = 5215430089 is a prime.

It is a super-2 number, since 2×5215430121² = 54401422694068149282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5215430091 and 5215430100.

It is not an unprimeable number, because it can be changed into a prime (5215430123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2924196 + ... + 2925978.

It is an arithmetic number, because the mean of its divisors is an integer number (239298624).

Almost surely, 2^5215430121 is an apocalyptic number.

It is an amenable number.

5215430121 is a deficient number, since it is larger than the sum of its proper divisors (2442125847).

5215430121 is a wasteful number, since it uses less digits than its factorization.

5215430121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 5215430121 is about 72217.9348984724. The cubic root of 5215430121 is about 1734.1901305973.

Adding to 5215430121 its reverse (1210345125), we get a palindrome (6425775246).

The spelling of 5215430121 in words is "five billion, two hundred fifteen million, four hundred thirty thousand, one hundred twenty-one".