2123431122550 has 12 divisors (see below), whose sum is σ = 3949581888036. Its totient is φ = 849372449000.

The previous prime is 2123431122517. The next prime is 2123431122559. The reversal of 2123431122550 is 552211343212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123431122559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21234311176 + ... + 21234311275.

It is an arithmetic number, because the mean of its divisors is an integer number (329131824003).

Almost surely, 2^{2123431122550} is an apocalyptic number.

2123431122550 is a deficient number, since it is larger than the sum of its proper divisors (1826150765486).

2123431122550 is a wasteful number, since it uses less digits than its factorization.

2123431122550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42468622463 (or 42468622458 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 2123431122550 its reverse (552211343212), we get a palindrome (2675642465762).

The spelling of 2123431122550 in words is "two trillion, one hundred twenty-three billion, four hundred thirty-one million, one hundred twenty-two thousand, five hundred fifty".