2121012202223 has 2 divisors, whose sum is σ = 2121012202224. Its totient is φ = 2121012202222.

The previous prime is 2121012202217. The next prime is 2121012202261. The reversal of 2121012202223 is 3222022101212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121012202223 - 2²⁶ = 2120945093359 is a prime.

It is a super-2 number, since 2×2121012202223² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121012202195 and 2121012202204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121012202213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060506101111 + 1060506101112.

It is an arithmetic number, because the mean of its divisors is an integer number (1060506101112).

Almost surely, 2^{2121012202223} is an apocalyptic number.

2121012202223 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121012202223 is an equidigital number, since it uses as much as digits as its factorization.

2121012202223 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 2121012202223 its reverse (3222022101212), we get a palindrome (5343034303435).

The spelling of 2121012202223 in words is "two trillion, one hundred twenty-one billion, twelve million, two hundred two thousand, two hundred twenty-three".