123103135220551 has 8 divisors (see below), whose sum is σ = 129592650213680. Its totient is φ = 116614660488768.

The previous prime is 123103135220543. The next prime is 123103135220651. The reversal of 123103135220551 is 155022531301321.

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

It is a cyclic number.

It is not a de Polignac number, because 123103135220551 - 2³ = 123103135220543 is a prime.

It is a super-2 number, since 2×123103135220551² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123103135220251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259822416 + ... + 260295781.

It is an arithmetic number, because the mean of its divisors is an integer number (16199081276710).

Almost surely, 2^{123103135220551} is an apocalyptic number.

123103135220551 is a deficient number, since it is larger than the sum of its proper divisors (6489514993129).

123103135220551 is a wasteful number, since it uses less digits than its factorization.

123103135220551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520130673.

The product of its (nonzero) digits is 27000, while the sum is 34.

Adding to 123103135220551 its reverse (155022531301321), we get a palindrome (278125666521872).

The spelling of 123103135220551 in words is "one hundred twenty-three trillion, one hundred three billion, one hundred thirty-five million, two hundred twenty thousand, five hundred fifty-one".