23120021011 has 2 divisors, whose sum is σ = 23120021012. Its totient is φ = 23120021010.

The previous prime is 23120021003. The next prime is 23120021033. The reversal of 23120021011 is 11012002132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23120021011 - 2³ = 23120021003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23120020982 and 23120021000.

It is not a weakly prime, because it can be changed into another prime (23120021311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560010505 + 11560010506.

It is an arithmetic number, because the mean of its divisors is an integer number (11560010506).

Almost surely, 2^23120021011 is an apocalyptic number.

23120021011 is a deficient number, since it is larger than the sum of its proper divisors (1).

23120021011 is an equidigital number, since it uses as much as digits as its factorization.

23120021011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 23120021011 its reverse (11012002132), we get a palindrome (34132023143).

The spelling of 23120021011 in words is "twenty-three billion, one hundred twenty million, twenty-one thousand, eleven".