122061329881 has 4 divisors (see below), whose sum is σ = 122062837732. Its totient is φ = 122059822032.

The previous prime is 122061329851. The next prime is 122061329891. The reversal of 122061329881 is 188923160221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79580410000 + 42480919881 = 282100^2 + 206109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122061329881 is a prime.

It is a super-2 number, since 2×122061329881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122061329821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625170 + ... + 796843.

It is an arithmetic number, because the mean of its divisors is an integer number (30515709433).

Almost surely, 2^122061329881 is an apocalyptic number.

It is an amenable number.

122061329881 is a deficient number, since it is larger than the sum of its proper divisors (1507851).

122061329881 is an equidigital number, since it uses as much as digits as its factorization.

122061329881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507850.

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 122061329881 in words is "one hundred twenty-two billion, sixty-one million, three hundred twenty-nine thousand, eight hundred eighty-one".