122142013043221 has 4 divisors (see below), whose sum is σ = 127452535349472. Its totient is φ = 116831490736972.

The previous prime is 122142013043207. The next prime is 122142013043333. The reversal of 122142013043221 is 122340310241221.

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 not a de Polignac number, because 122142013043221 - 2⁵ = 122142013043189 is a prime.

It is a super-2 number, since 2×122142013043221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122142013043221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122142013043021) 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, 2655261153091 + ... + 2655261153136.

It is an arithmetic number, because the mean of its divisors is an integer number (31863133837368).

Almost surely, 2^{122142013043221} is an apocalyptic number.

It is an amenable number.

122142013043221 is a deficient number, since it is larger than the sum of its proper divisors (5310522306251).

122142013043221 is an equidigital number, since it uses as much as digits as its factorization.

122142013043221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5310522306250.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 122142013043221 its reverse (122340310241221), we get a palindrome (244482323284442).

The spelling of 122142013043221 in words is "one hundred twenty-two trillion, one hundred forty-two billion, thirteen million, forty-three thousand, two hundred twenty-one".