124212242212021 has 2 divisors, whose sum is σ = 124212242212022. Its totient is φ = 124212242212020.

The previous prime is 124212242212007. The next prime is 124212242212049. The reversal of 124212242212021 is 120212242212421.

It is a happy number.

It is an a-pointer prime, because the next prime (124212242212049) can be obtained adding 124212242212021 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98917226969796 + 25295015242225 = 9945714^2 + 5029415^2 .

It is a cyclic number.

It is not a de Polignac number, because 124212242212021 - 2¹⁹ = 124212241687733 is a prime.

It is a super-2 number, since 2×124212242212021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124212242272021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62106121106010 + 62106121106011.

It is an arithmetic number, because the mean of its divisors is an integer number (62106121106011).

Almost surely, 2^{124212242212021} is an apocalyptic number.

It is an amenable number.

124212242212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

124212242212021 is an equidigital number, since it uses as much as digits as its factorization.

124212242212021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4096, while the sum is 28.

Adding to 124212242212021 its reverse (120212242212421), we get a palindrome (244424484424442).

The spelling of 124212242212021 in words is "one hundred twenty-four trillion, two hundred twelve billion, two hundred forty-two million, two hundred twelve thousand, twenty-one".