102021321122111 has 2 divisors, whose sum is σ = 102021321122112. Its totient is φ = 102021321122110.

The previous prime is 102021321122059. The next prime is 102021321122131. The reversal of 102021321122111 is 111221123120201.

It is an a-pointer prime, because the next prime (102021321122131) can be obtained adding 102021321122111 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102021321122111 - 2¹⁰ = 102021321121087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102021321122131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010660561055 + 51010660561056.

It is an arithmetic number, because the mean of its divisors is an integer number (51010660561056).

Almost surely, 2^{102021321122111} is an apocalyptic number.

102021321122111 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021321122111 is an equidigital number, since it uses as much as digits as its factorization.

102021321122111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 102021321122111 its reverse (111221123120201), we get a palindrome (213242444242312).

The spelling of 102021321122111 in words is "one hundred two trillion, twenty-one billion, three hundred twenty-one million, one hundred twenty-two thousand, one hundred eleven".