2150312230421 has 4 divisors (see below), whose sum is σ = 2155419860844. Its totient is φ = 2145204600000.

The previous prime is 2150312230411. The next prime is 2150312230459. The reversal of 2150312230421 is 1240322130512.

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 921429127921 + 1228883102500 = 959911^2 + 1108550^2 .

It is a cyclic number.

It is not a de Polignac number, because 2150312230421 - 2³⁴ = 2133132361237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150312230411) 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, 2553814580 + ... + 2553815421.

It is an arithmetic number, because the mean of its divisors is an integer number (538854965211).

Almost surely, 2^{2150312230421} is an apocalyptic number.

It is an amenable number.

2150312230421 is a deficient number, since it is larger than the sum of its proper divisors (5107630423).

2150312230421 is an equidigital number, since it uses as much as digits as its factorization.

2150312230421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5107630422.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 2150312230421 its reverse (1240322130512), we get a palindrome (3390634360933).

Subtracting from 2150312230421 its reverse (1240322130512), we obtain a palindrome (909990099909).

The spelling of 2150312230421 in words is "two trillion, one hundred fifty billion, three hundred twelve million, two hundred thirty thousand, four hundred twenty-one".