121222986993593 has 2 divisors, whose sum is σ = 121222986993594. Its totient is φ = 121222986993592.

The previous prime is 121222986993557. The next prime is 121222986993611. The reversal of 121222986993593 is 395399689222121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74938749218089 + 46284237775504 = 8656717^2 + 6803252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121222986993593 is a prime.

It is not a weakly prime, because it can be changed into another prime (121222986998593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611493496796 + 60611493496797.

It is an arithmetic number, because the mean of its divisors is an integer number (60611493496797).

Almost surely, 2^{121222986993593} is an apocalyptic number.

It is an amenable number.

121222986993593 is a deficient number, since it is larger than the sum of its proper divisors (1).

121222986993593 is an equidigital number, since it uses as much as digits as its factorization.

121222986993593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226748160, while the sum is 71.

The spelling of 121222986993593 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, nine hundred eighty-six million, nine hundred ninety-three thousand, five hundred ninety-three".