2123351332550 has 24 divisors (see below), whose sum is σ = 4513638261936. Its totient is φ = 728006171040.

The previous prime is 2123351332547. The next prime is 2123351332559. The reversal of 2123351332550 is 552331533212.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2123351332550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123351332559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3033358697 + ... + 3033359396.

It is an arithmetic number, because the mean of its divisors is an integer number (188068260914).

Almost surely, 2^{2123351332550} is an apocalyptic number.

2123351332550 is an abundant number, since it is smaller than the sum of its proper divisors (2390286929386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123351332550 is a wasteful number, since it uses less digits than its factorization.

2123351332550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6066718112 (or 6066718107 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 35.

Adding to 2123351332550 its reverse (552331533212), we get a palindrome (2675682865762).

The spelling of 2123351332550 in words is "two trillion, one hundred twenty-three billion, three hundred fifty-one million, three hundred thirty-two thousand, five hundred fifty".