1021201220023 has 2 divisors, whose sum is σ = 1021201220024. Its totient is φ = 1021201220022.

The previous prime is 1021201220021. The next prime is 1021201220111. The reversal of 1021201220023 is 3200221021201.

It is a happy number.

1021201220023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021201220023 - 2¹ = 1021201220021 is a prime.

It is a super-2 number, since 2×1021201220023² (a number of 25 digits) contains 22 as substring.

Together with 1021201220021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1021201219979 and 1021201220006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021201220021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510600610011 + 510600610012.

It is an arithmetic number, because the mean of its divisors is an integer number (510600610012).

Almost surely, 2^{1021201220023} is an apocalyptic number.

1021201220023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021201220023 is an equidigital number, since it uses as much as digits as its factorization.

1021201220023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1021201220023 its reverse (3200221021201), we get a palindrome (4221422241224).

The spelling of 1021201220023 in words is "one trillion, twenty-one billion, two hundred one million, two hundred twenty thousand, twenty-three".