121121111941 has 2 divisors, whose sum is σ = 121121111942. Its totient is φ = 121121111940.

The previous prime is 121121111921. The next prime is 121121112023. The reversal of 121121111941 is 149111121121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91028924100 + 30092187841 = 301710^2 + 173471^2 .

It is a cyclic number.

It is not a de Polignac number, because 121121111941 - 2⁹ = 121121111429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121121111921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560555970 + 60560555971.

It is an arithmetic number, because the mean of its divisors is an integer number (60560555971).

Almost surely, 2^121121111941 is an apocalyptic number.

It is an amenable number.

121121111941 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121111941 is an equidigital number, since it uses as much as digits as its factorization.

121121111941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 25.

The spelling of 121121111941 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, nine hundred forty-one".