122142016651 has 4 divisors (see below), whose sum is σ = 122143222512. Its totient is φ = 122140810792.

The previous prime is 122142016639. The next prime is 122142016699. The reversal of 122142016651 is 156610241221.

It is a happy number.

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-122142016651 is a prime.

It is a super-2 number, since 2×122142016651² (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 (122142016351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435496 + ... + 658741.

It is an arithmetic number, because the mean of its divisors is an integer number (30535805628).

Almost surely, 2^122142016651 is an apocalyptic number.

122142016651 is a deficient number, since it is larger than the sum of its proper divisors (1205861).

122142016651 is a wasteful number, since it uses less digits than its factorization.

122142016651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205860.

The product of its (nonzero) digits is 5760, while the sum is 31.

Adding to 122142016651 its reverse (156610241221), we get a palindrome (278752257872).

The spelling of 122142016651 in words is "one hundred twenty-two billion, one hundred forty-two million, sixteen thousand, six hundred fifty-one".