10123212101 has 4 divisors (see below), whose sum is σ = 10123936704. Its totient is φ = 10122487500.

The previous prime is 10123212089. The next prime is 10123212119. The reversal of 10123212101 is 10121232101.

10123212101 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10121232101 = 89 ⋅113721709.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10123212101 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123212131) 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 in 3 ways as a sum of consecutive naturals, for example, 340925 + ... + 369426.

It is an arithmetic number, because the mean of its divisors is an integer number (2530984176).

Almost surely, 2^10123212101 is an apocalyptic number.

It is an amenable number.

10123212101 is a deficient number, since it is larger than the sum of its proper divisors (724603).

10123212101 is an equidigital number, since it uses as much as digits as its factorization.

10123212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724602.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10123212101 its reverse (10121232101), we get a palindrome (20244444202).

The spelling of 10123212101 in words is "ten billion, one hundred twenty-three million, two hundred twelve thousand, one hundred one".