2021201222123 has 2 divisors, whose sum is σ = 2021201222124. Its totient is φ = 2021201222122.

The previous prime is 2021201222119. The next prime is 2021201222149. The reversal of 2021201222123 is 3212221021202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021201222123 - 2² = 2021201222119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021201222095 and 2021201222104.

It is not a weakly prime, because it can be changed into another prime (2021201222323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010600611061 + 1010600611062.

It is an arithmetic number, because the mean of its divisors is an integer number (1010600611062).

Almost surely, 2^{2021201222123} is an apocalyptic number.

2021201222123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021201222123 is an equidigital number, since it uses as much as digits as its factorization.

2021201222123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2021201222123 its reverse (3212221021202), we get a palindrome (5233422243325).

The spelling of 2021201222123 in words is "two trillion, twenty-one billion, two hundred one million, two hundred twenty-two thousand, one hundred twenty-three".