2151123301 has 4 divisors (see below), whose sum is σ = 2151467212. Its totient is φ = 2150779392.

The previous prime is 2151123287. The next prime is 2151123319. The reversal of 2151123301 is 1033211512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1183291201 + 967832100 = 34399^2 + 31110^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151123301 - 2⁵ = 2151123269 is a prime.

It is a super-2 number, since 2×2151123301² = 9254662912210273202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151123391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162396 + ... + 175141.

It is an arithmetic number, because the mean of its divisors is an integer number (537866803).

Almost surely, 2^2151123301 is an apocalyptic number.

It is an amenable number.

2151123301 is a deficient number, since it is larger than the sum of its proper divisors (343911).

2151123301 is an equidigital number, since it uses as much as digits as its factorization.

2151123301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343910.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 2151123301 is about 46380.2037619500. The cubic root of 2151123301 is about 1290.8876171837.

Adding to 2151123301 its reverse (1033211512), we get a palindrome (3184334813).

The spelling of 2151123301 in words is "two billion, one hundred fifty-one million, one hundred twenty-three thousand, three hundred one".