2312121445 has 8 divisors (see below), whose sum is σ = 2774852640. Its totient is φ = 1849492560.

The previous prime is 2312121433. The next prime is 2312121467. The reversal of 2312121445 is 5441212132.

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

It is not a de Polignac number, because 2312121445 - 2¹⁵ = 2312088677 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38946 + ... + 78364.

It is an arithmetic number, because the mean of its divisors is an integer number (346856580).

Almost surely, 2^2312121445 is an apocalyptic number.

It is an amenable number.

2312121445 is a deficient number, since it is larger than the sum of its proper divisors (462731195).

2312121445 is a wasteful number, since it uses less digits than its factorization.

2312121445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51155.

The product of its digits is 1920, while the sum is 25.

The square root of 2312121445 is about 48084.5239656170. The cubic root of 2312121445 is about 1322.3209558896.

Adding to 2312121445 its reverse (5441212132), we get a palindrome (7753333577).

The spelling of 2312121445 in words is "two billion, three hundred twelve million, one hundred twenty-one thousand, four hundred forty-five".