23012221061 has 2 divisors, whose sum is σ = 23012221062. Its totient is φ = 23012221060.

The previous prime is 23012220983. The next prime is 23012221079. The reversal of 23012221061 is 16012221032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17234700961 + 5777520100 = 131281^2 + 76010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23012221061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23012221081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11506110530 + 11506110531.

It is an arithmetic number, because the mean of its divisors is an integer number (11506110531).

Almost surely, 2^23012221061 is an apocalyptic number.

It is an amenable number.

23012221061 is a deficient number, since it is larger than the sum of its proper divisors (1).

23012221061 is an equidigital number, since it uses as much as digits as its factorization.

23012221061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 23012221061 its reverse (16012221032), we get a palindrome (39024442093).

The spelling of 23012221061 in words is "twenty-three billion, twelve million, two hundred twenty-one thousand, sixty-one".