122155543445 has 8 divisors (see below), whose sum is σ = 157862548536. Its totient is φ = 90207170496.

The previous prime is 122155543361. The next prime is 122155543469. The reversal of 122155543445 is 544345551221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9486565201 + 112668978244 = 97399^2 + 335662^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 122155543445 - 2⁸ = 122155543189 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 939657962 + ... + 939658091.

It is an arithmetic number, because the mean of its divisors is an integer number (19732818567).

Almost surely, 2^122155543445 is an apocalyptic number.

It is an amenable number.

122155543445 is a deficient number, since it is larger than the sum of its proper divisors (35707005091).

122155543445 is a wasteful number, since it uses less digits than its factorization.

122155543445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879316071.

The product of its digits is 480000, while the sum is 41.

The spelling of 122155543445 in words is "one hundred twenty-two billion, one hundred fifty-five million, five hundred forty-three thousand, four hundred forty-five".