2170530121 has 8 divisors (see below), whose sum is σ = 2208340800. Its totient is φ = 2132791440.

The previous prime is 2170530101. The next prime is 2170530139. The reversal of 2170530121 is 1210350712.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2170530121 - 2¹⁵ = 2170497353 is a prime.

It is a super-2 number, since 2×2170530121² = 9422402012336549282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2170530092 and 2170530101.

It is not an unprimeable number, because it can be changed into a prime (2170530101) 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, 44700 + ... + 79618.

It is an arithmetic number, because the mean of its divisors is an integer number (276042600).

Almost surely, 2^2170530121 is an apocalyptic number.

It is an amenable number.

2170530121 is a deficient number, since it is larger than the sum of its proper divisors (37810679).

2170530121 is a wasteful number, since it uses less digits than its factorization.

2170530121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35999.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 2170530121 is about 46588.9484856656. The cubic root of 2170530121 is about 1294.7580076837.

Adding to 2170530121 its reverse (1210350712), we get a palindrome (3380880833).

The spelling of 2170530121 in words is "two billion, one hundred seventy million, five hundred thirty thousand, one hundred twenty-one".