122020147391 has 4 divisors (see below), whose sum is σ = 122024964912. Its totient is φ = 122015329872.

The previous prime is 122020147357. The next prime is 122020147411. The reversal of 122020147391 is 193741020221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122020147391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122020147351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2370566 + ... + 2421491.

It is an arithmetic number, because the mean of its divisors is an integer number (30506241228).

Almost surely, 2^122020147391 is an apocalyptic number.

122020147391 is a deficient number, since it is larger than the sum of its proper divisors (4817521).

122020147391 is an equidigital number, since it uses as much as digits as its factorization.

122020147391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817520.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 122020147391 in words is "one hundred twenty-two billion, twenty million, one hundred forty-seven thousand, three hundred ninety-one".