122135505123 has 8 divisors (see below), whose sum is σ = 162931593808. Its totient is φ = 81381543264.

The previous prime is 122135505091. The next prime is 122135505137. The reversal of 122135505123 is 321505531221.

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

It is not a de Polignac number, because 122135505123 - 2⁵ = 122135505091 is a prime.

It is a super-2 number, since 2×122135505123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122135505523) 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, 10524940 + ... + 10536537.

It is an arithmetic number, because the mean of its divisors is an integer number (20366449226).

Almost surely, 2^122135505123 is an apocalyptic number.

122135505123 is a deficient number, since it is larger than the sum of its proper divisors (40796088685).

122135505123 is a wasteful number, since it uses less digits than its factorization.

122135505123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21063413.

The product of its (nonzero) digits is 9000, while the sum is 30.

The spelling of 122135505123 in words is "one hundred twenty-two billion, one hundred thirty-five million, five hundred five thousand, one hundred twenty-three".