10211121623 has 2 divisors, whose sum is σ = 10211121624. Its totient is φ = 10211121622.

The previous prime is 10211121617. The next prime is 10211121637. The reversal of 10211121623 is 32612111201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10211121623 - 2⁸ = 10211121367 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10211121595 and 10211121604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211121023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105560811 + 5105560812.

It is an arithmetic number, because the mean of its divisors is an integer number (5105560812).

Almost surely, 2^10211121623 is an apocalyptic number.

10211121623 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211121623 is an equidigital number, since it uses as much as digits as its factorization.

10211121623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 10211121623 its reverse (32612111201), we get a palindrome (42823232824).

The spelling of 10211121623 in words is "ten billion, two hundred eleven million, one hundred twenty-one thousand, six hundred twenty-three".