20969233123 has 2 divisors, whose sum is σ = 20969233124. Its totient is φ = 20969233122.

The previous prime is 20969233099. The next prime is 20969233127. The reversal of 20969233123 is 32133296902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20969233123 - 2⁵ = 20969233091 is a prime.

It is not a weakly prime, because it can be changed into another prime (20969233127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10484616561 + 10484616562.

It is an arithmetic number, because the mean of its divisors is an integer number (10484616562).

Almost surely, 2^20969233123 is an apocalyptic number.

20969233123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20969233123 is an equidigital number, since it uses as much as digits as its factorization.

20969233123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 40.

The spelling of 20969233123 in words is "twenty billion, nine hundred sixty-nine million, two hundred thirty-three thousand, one hundred twenty-three".