122667551412 has 96 divisors (see below), whose sum is σ = 332334213120. Its totient is φ = 34492675200.

The previous prime is 122667551411. The next prime is 122667551417. The reversal of 122667551412 is 214155766221.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122667551411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1373539 + ... + 1460117.

It is an arithmetic number, because the mean of its divisors is an integer number (3461814720).

Almost surely, 2^122667551412 is an apocalyptic number.

122667551412 is a gapful number since it is divisible by the number (12) 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 122667551412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166167106560).

122667551412 is an abundant number, since it is smaller than the sum of its proper divisors (209666661708).

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

122667551412 is a wasteful number, since it uses less digits than its factorization.

122667551412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86861 (or 86859 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The spelling of 122667551412 in words is "one hundred twenty-two billion, six hundred sixty-seven million, five hundred fifty-one thousand, four hundred twelve".