122151345555511 has 8 divisors (see below), whose sum is σ = 122619831951600. Its totient is φ = 121683057050688.

The previous prime is 122151345555443. The next prime is 122151345555521. The reversal of 122151345555511 is 115555543151221.

It is a happy number.

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 122151345555511 - 2³⁹ = 121601589741623 is a prime.

It is a super-2 number, since 2×122151345555511² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122151345555521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48235861 + ... + 50705038.

It is an arithmetic number, because the mean of its divisors is an integer number (15327478993950).

Almost surely, 2^{122151345555511} is an apocalyptic number.

122151345555511 is a deficient number, since it is larger than the sum of its proper divisors (468486396089).

122151345555511 is an equidigital number, since it uses as much as digits as its factorization.

122151345555511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98945633.

The product of its digits is 750000, while the sum is 46.

The spelling of 122151345555511 in words is "one hundred twenty-two trillion, one hundred fifty-one billion, three hundred forty-five million, five hundred fifty-five thousand, five hundred eleven".