23121102029 has 2 divisors, whose sum is σ = 23121102030. Its totient is φ = 23121102028.

The previous prime is 23121101989. The next prime is 23121102041. The reversal of 23121102029 is 92020112132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18360792004 + 4760310025 = 135502^2 + 68995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23121102029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23121101995 and 23121102013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23121102929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560551014 + 11560551015.

It is an arithmetic number, because the mean of its divisors is an integer number (11560551015).

Almost surely, 2^23121102029 is an apocalyptic number.

It is an amenable number.

23121102029 is a deficient number, since it is larger than the sum of its proper divisors (1).

23121102029 is an equidigital number, since it uses as much as digits as its factorization.

23121102029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 23121102029 in words is "twenty-three billion, one hundred twenty-one million, one hundred two thousand, twenty-nine".