124220424022421 has 2 divisors, whose sum is σ = 124220424022422. Its totient is φ = 124220424022420.

The previous prime is 124220424022381. The next prime is 124220424022477.

It is a happy number.

124220424022421 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98861041666321 + 25359382356100 = 9942889^2 + 5035810^2 .

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124220424022421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124220424022621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62110212011210 + 62110212011211.

It is an arithmetic number, because the mean of its divisors is an integer number (62110212011211).

Almost surely, 2^{124220424022421} is an apocalyptic number.

It is an amenable number.

124220424022421 is a deficient number, since it is larger than the sum of its proper divisors (1).

124220424022421 is an equidigital number, since it uses as much as digits as its factorization.

124220424022421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32768, while the sum is 32.

The spelling of 124220424022421 in words is "one hundred twenty-four trillion, two hundred twenty billion, four hundred twenty-four million, twenty-two thousand, four hundred twenty-one".