122742011501 has 4 divisors (see below), whose sum is σ = 122754978012. Its totient is φ = 122729044992.

The previous prime is 122742011479. The next prime is 122742011519. The reversal of 122742011501 is 105110247221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 105110247221 = 7 ⋅15015749603.

It can be written as a sum of positive squares in 2 ways, for example, as 92006662276 + 30735349225 = 303326^2 + 175315^2 .

It is a cyclic number.

It is not a de Polignac number, because 122742011501 - 2¹⁰ = 122742010477 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 (122742011591) 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, 6469046 + ... + 6487991.

It is an arithmetic number, because the mean of its divisors is an integer number (30688744503).

Almost surely, 2^122742011501 is an apocalyptic number.

It is an amenable number.

122742011501 is a deficient number, since it is larger than the sum of its proper divisors (12966511).

122742011501 is an equidigital number, since it uses as much as digits as its factorization.

122742011501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12966510.

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 122742011501 its reverse (105110247221), we get a palindrome (227852258722).

The spelling of 122742011501 in words is "one hundred twenty-two billion, seven hundred forty-two million, eleven thousand, five hundred one".