121121011061 has 2 divisors, whose sum is σ = 121121011062. Its totient is φ = 121121011060.

The previous prime is 121121011019. The next prime is 121121011073. The reversal of 121121011061 is 160110121121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81635346961 + 39485664100 = 285719^2 + 198710^2 .

It is an emirp because it is prime and its reverse (160110121121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121121011061 - 2¹⁴ = 121120994677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121121011961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560505530 + 60560505531.

It is an arithmetic number, because the mean of its divisors is an integer number (60560505531).

Almost surely, 2^121121011061 is an apocalyptic number.

It is an amenable number.

121121011061 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121011061 is an equidigital number, since it uses as much as digits as its factorization.

121121011061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 121121011061 its reverse (160110121121), we get a palindrome (281231132182).

The spelling of 121121011061 in words is "one hundred twenty-one billion, one hundred twenty-one million, eleven thousand, sixty-one".