23121011220029 has 2 divisors, whose sum is σ = 23121011220030. Its totient is φ = 23121011220028.

The previous prime is 23121011219987. The next prime is 23121011220079. The reversal of 23121011220029 is 92002211012132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13467997195129 + 9653014024900 = 3669877^2 + 3106930^2 .

It is a cyclic number.

It is not a de Polignac number, because 23121011220029 - 2³⁶ = 23052291743293 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 (23121011220079) 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, 11560505610014 + 11560505610015.

It is an arithmetic number, because the mean of its divisors is an integer number (11560505610015).

Almost surely, 2^{23121011220029} is an apocalyptic number.

It is an amenable number.

23121011220029 is a deficient number, since it is larger than the sum of its proper divisors (1).

23121011220029 is an equidigital number, since it uses as much as digits as its factorization.

23121011220029 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 23121011220029 in words is "twenty-three trillion, one hundred twenty-one billion, eleven million, two hundred twenty thousand, twenty-nine".