101123421029 has 2 divisors, whose sum is σ = 101123421030. Its totient is φ = 101123421028.

The previous prime is 101123421001. The next prime is 101123421041. The reversal of 101123421029 is 920124321101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67626002500 + 33497418529 = 260050^2 + 183023^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101123421029 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 101123420989 and 101123421007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101123421059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50561710514 + 50561710515.

It is an arithmetic number, because the mean of its divisors is an integer number (50561710515).

Almost surely, 2^101123421029 is an apocalyptic number.

It is an amenable number.

101123421029 is a deficient number, since it is larger than the sum of its proper divisors (1).

101123421029 is an equidigital number, since it uses as much as digits as its factorization.

101123421029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 101123421029 in words is "one hundred one billion, one hundred twenty-three million, four hundred twenty-one thousand, twenty-nine".