122664512100 has 288 divisors, whose sum is σ = 387271213056. Its totient is φ = 29797286400.

The previous prime is 122664512077. The next prime is 122664512119. The reversal of 122664512100 is 1215466221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 112432555 + ... + 112433645.

It is an arithmetic number, because the mean of its divisors is an integer number (1344691712).

Almost surely, 2^122664512100 is an apocalyptic number.

122664512100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122664512100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193635606528).

122664512100 is an abundant number, since it is smaller than the sum of its proper divisors (264606700956).

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

122664512100 is a wasteful number, since it uses less digits than its factorization.

122664512100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475 (or 1468 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 122664512100 its reverse (1215466221), we get a palindrome (123879978321).

The spelling of 122664512100 in words is "one hundred twenty-two billion, six hundred sixty-four million, five hundred twelve thousand, one hundred".