122124421023421 has 4 divisors (see below), whose sum is σ = 122129386868412. Its totient is φ = 122119455178432.

The previous prime is 122124421023347. The next prime is 122124421023427. The reversal of 122124421023421 is 124320124421221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39239074092100 + 82885346931321 = 6264110^2 + 9104139^2 .

It is a cyclic number.

It is not a de Polignac number, because 122124421023421 - 2³⁹ = 121574665209533 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 (122124421023427) 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, 2482885606 + ... + 2482934791.

It is an arithmetic number, because the mean of its divisors is an integer number (30532346717103).

Almost surely, 2^{122124421023421} is an apocalyptic number.

It is an amenable number.

122124421023421 is a deficient number, since it is larger than the sum of its proper divisors (4965844991).

122124421023421 is an equidigital number, since it uses as much as digits as its factorization.

122124421023421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4965844990.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 122124421023421 its reverse (124320124421221), we get a palindrome (246444545444642).

The spelling of 122124421023421 in words is "one hundred twenty-two trillion, one hundred twenty-four billion, four hundred twenty-one million, twenty-three thousand, four hundred twenty-one".