10202121101023 has 4 divisors (see below), whose sum is σ = 10375038407880. Its totient is φ = 10029203794168.

The previous prime is 10202121100991. The next prime is 10202121101069. The reversal of 10202121101023 is 32010112120201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10202121101023 - 2⁵ = 10202121100991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10202121100988 and 10202121101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202121101923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86458653340 + ... + 86458653457.

It is an arithmetic number, because the mean of its divisors is an integer number (2593759601970).

Almost surely, 2^{10202121101023} is an apocalyptic number.

10202121101023 is a deficient number, since it is larger than the sum of its proper divisors (172917306857).

10202121101023 is an equidigital number, since it uses as much as digits as its factorization.

10202121101023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172917306856.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 10202121101023 its reverse (32010112120201), we get a palindrome (42212233221224).

The spelling of 10202121101023 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, one hundred one thousand, twenty-three".