122510111420 has 24 divisors (see below), whose sum is σ = 258000062544. Its totient is φ = 48865220096.

The previous prime is 122510111411. The next prime is 122510111483. The reversal of 122510111420 is 24111015221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 122510111392 and 122510111401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8669294 + ... + 8683413.

It is an arithmetic number, because the mean of its divisors is an integer number (10750002606).

Almost surely, 2^122510111420 is an apocalyptic number.

122510111420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122510111420 is an abundant number, since it is smaller than the sum of its proper divisors (135489951124).

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

122510111420 is a wasteful number, since it uses less digits than its factorization.

122510111420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17353069 (or 17353067 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 122510111420 its reverse (24111015221), we get a palindrome (146621126641).

The spelling of 122510111420 in words is "one hundred twenty-two billion, five hundred ten million, one hundred eleven thousand, four hundred twenty".