202021200200123 has 2 divisors, whose sum is σ = 202021200200124. Its totient is φ = 202021200200122.

The previous prime is 202021200200009. The next prime is 202021200200213. The reversal of 202021200200123 is 321002002120202.

Together with next prime (202021200200213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202021200200123 - 2²² = 202021196005819 is a prime.

It is not a weakly prime, because it can be changed into another prime (202021200200623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010600100061 + 101010600100062.

It is an arithmetic number, because the mean of its divisors is an integer number (101010600100062).

Almost surely, 2^{202021200200123} is an apocalyptic number.

202021200200123 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021200200123 is an equidigital number, since it uses as much as digits as its factorization.

202021200200123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 202021200200123 its reverse (321002002120202), we get a palindrome (523023202320325).

The spelling of 202021200200123 in words is "two hundred two trillion, twenty-one billion, two hundred million, two hundred thousand, one hundred twenty-three".