421162506101 has 2 divisors, whose sum is σ = 421162506102. Its totient is φ = 421162506100.

The previous prime is 421162506029. The next prime is 421162506113. The reversal of 421162506101 is 101605261124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254474847025 + 166687659076 = 504455^2 + 408274^2 .

It is a cyclic number.

It is not a de Polignac number, because 421162506101 - 2³⁴ = 403982636917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421162506181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210581253050 + 210581253051.

It is an arithmetic number, because the mean of its divisors is an integer number (210581253051).

Almost surely, 2^421162506101 is an apocalyptic number.

It is an amenable number.

421162506101 is a deficient number, since it is larger than the sum of its proper divisors (1).

421162506101 is an equidigital number, since it uses as much as digits as its factorization.

421162506101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 421162506101 its reverse (101605261124), we get a palindrome (522767767225).

The spelling of 421162506101 in words is "four hundred twenty-one billion, one hundred sixty-two million, five hundred six thousand, one hundred one".