121022210213873 has 2 divisors, whose sum is σ = 121022210213874. Its totient is φ = 121022210213872.

The previous prime is 121022210213869. The next prime is 121022210213897. The reversal of 121022210213873 is 378312012220121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120966056380849 + 56153833024 = 10998457^2 + 236968^2 .

It is a cyclic number.

It is not a de Polignac number, because 121022210213873 - 2² = 121022210213869 is a prime.

It is not a weakly prime, because it can be changed into another prime (121022210213843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511105106936 + 60511105106937.

It is an arithmetic number, because the mean of its divisors is an integer number (60511105106937).

Almost surely, 2^{121022210213873} is an apocalyptic number.

It is an amenable number.

121022210213873 is a deficient number, since it is larger than the sum of its proper divisors (1).

121022210213873 is an equidigital number, since it uses as much as digits as its factorization.

121022210213873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 35.

Adding to 121022210213873 its reverse (378312012220121), we get a palindrome (499334222433994).

The spelling of 121022210213873 in words is "one hundred twenty-one trillion, twenty-two billion, two hundred ten million, two hundred thirteen thousand, eight hundred seventy-three".