203021220023 has 2 divisors, whose sum is σ = 203021220024. Its totient is φ = 203021220022.

The previous prime is 203021219971. The next prime is 203021220043. The reversal of 203021220023 is 320022120302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203021220023 - 2¹² = 203021215927 is a prime.

It is a super-2 number, since 2×203021220023² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203021219983 and 203021220010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203021220043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101510610011 + 101510610012.

It is an arithmetic number, because the mean of its divisors is an integer number (101510610012).

Almost surely, 2^203021220023 is an apocalyptic number.

203021220023 is a deficient number, since it is larger than the sum of its proper divisors (1).

203021220023 is an equidigital number, since it uses as much as digits as its factorization.

203021220023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 203021220023 its reverse (320022120302), we get a palindrome (523043340325).

The spelling of 203021220023 in words is "two hundred three billion, twenty-one million, two hundred twenty thousand, twenty-three".