211121211220093 has 2 divisors, whose sum is σ = 211121211220094. Its totient is φ = 211121211220092.

The previous prime is 211121211219911. The next prime is 211121211220099. The reversal of 211121211220093 is 390022112121112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190337259060729 + 20783952159364 = 13796277^2 + 4558942^2 .

It is a cyclic number.

It is not a de Polignac number, because 211121211220093 - 2²⁵ = 211121177665661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211121211220099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560605610046 + 105560605610047.

It is an arithmetic number, because the mean of its divisors is an integer number (105560605610047).

Almost surely, 2^{211121211220093} is an apocalyptic number.

It is an amenable number.

211121211220093 is a deficient number, since it is larger than the sum of its proper divisors (1).

211121211220093 is an equidigital number, since it uses as much as digits as its factorization.

211121211220093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 211121211220093 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred eleven million, two hundred twenty thousand, ninety-three".