122146641221 has 4 divisors (see below), whose sum is σ = 133250881344. Its totient is φ = 111042401100.

The previous prime is 122146641203. The next prime is 122146641247.

122146641221 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122146641221 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 (122146646221) 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, 5552120045 + ... + 5552120066.

It is an arithmetic number, because the mean of its divisors is an integer number (33312720336).

Almost surely, 2^122146641221 is an apocalyptic number.

122146641221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122146641221 is a deficient number, since it is larger than the sum of its proper divisors (11104240123).

122146641221 is a wasteful number, since it uses less digits than its factorization.

122146641221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11104240122.

The product of its digits is 9216, while the sum is 32.

It can be divided in two parts, 122146 and 641221, that added together give a palindrome (763367).

The spelling of 122146641221 in words is "one hundred twenty-two billion, one hundred forty-six million, six hundred forty-one thousand, two hundred twenty-one".