10202121111023 has 2 divisors, whose sum is σ = 10202121111024. Its totient is φ = 10202121111022.

The previous prime is 10202121110983. The next prime is 10202121111043. The reversal of 10202121111023 is 32011112120201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10202121111023 - 2⁶ = 10202121110959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10202121110992 and 10202121111010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10202121111043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101060555511 + 5101060555512.

It is an arithmetic number, because the mean of its divisors is an integer number (5101060555512).

Almost surely, 2^{10202121111023} is an apocalyptic number.

10202121111023 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202121111023 is an equidigital number, since it uses as much as digits as its factorization.

10202121111023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 10202121111023 its reverse (32011112120201), we get a palindrome (42213233231224).

The spelling of 10202121111023 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, one hundred eleven thousand, twenty-three".