133122242420 has 12 divisors (see below), whose sum is σ = 279556709124. Its totient is φ = 53248896960.

The previous prime is 133122242413. The next prime is 133122242453. The reversal of 133122242420 is 24242221331.

It can be written as a sum of positive squares in 2 ways, for example, as 34005572836 + 99116669584 = 184406^2 + 314828^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 133122242420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3328056041 + ... + 3328056080.

It is an arithmetic number, because the mean of its divisors is an integer number (23296392427).

Almost surely, 2^133122242420 is an apocalyptic number.

133122242420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133122242420 is an abundant number, since it is smaller than the sum of its proper divisors (146434466704).

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

133122242420 is a wasteful number, since it uses less digits than its factorization.

133122242420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6656112130 (or 6656112128 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 133122242420 its reverse (24242221331), we get a palindrome (157364463751).

The spelling of 133122242420 in words is "one hundred thirty-three billion, one hundred twenty-two million, two hundred forty-two thousand, four hundred twenty".