2021011212223 has 2 divisors, whose sum is σ = 2021011212224. Its totient is φ = 2021011212222.

The previous prime is 2021011212203. The next prime is 2021011212247. The reversal of 2021011212223 is 3222121101202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021011212223 - 2⁹ = 2021011211711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021011212223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021011212203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010505606111 + 1010505606112.

It is an arithmetic number, because the mean of its divisors is an integer number (1010505606112).

Almost surely, 2^{2021011212223} is an apocalyptic number.

2021011212223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021011212223 is an equidigital number, since it uses as much as digits as its factorization.

2021011212223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2021011212223 its reverse (3222121101202), we get a palindrome (5243132313425).

The spelling of 2021011212223 in words is "two trillion, twenty-one billion, eleven million, two hundred twelve thousand, two hundred twenty-three".