100421142251 has 2 divisors, whose sum is σ = 100421142252. Its totient is φ = 100421142250.

The previous prime is 100421142229. The next prime is 100421142271. The reversal of 100421142251 is 152241124001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100421142251 - 2¹⁸ = 100420880107 is a prime.

It is not a weakly prime, because it can be changed into another prime (100421142271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50210571125 + 50210571126.

It is an arithmetic number, because the mean of its divisors is an integer number (50210571126).

Almost surely, 2^100421142251 is an apocalyptic number.

100421142251 is a deficient number, since it is larger than the sum of its proper divisors (1).

100421142251 is an equidigital number, since it uses as much as digits as its factorization.

100421142251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 100421142251 its reverse (152241124001), we get a palindrome (252662266252).

The spelling of 100421142251 in words is "one hundred billion, four hundred twenty-one million, one hundred forty-two thousand, two hundred fifty-one".