121001111029 has 2 divisors, whose sum is σ = 121001111030. Its totient is φ = 121001111028.

The previous prime is 121001110973. The next prime is 121001111041. The reversal of 121001111029 is 920111100121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67820138929 + 53180972100 = 260423^2 + 230610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121001111029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121001110997 and 121001111015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121001111069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500555514 + 60500555515.

It is an arithmetic number, because the mean of its divisors is an integer number (60500555515).

Almost surely, 2^121001111029 is an apocalyptic number.

It is an amenable number.

121001111029 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001111029 is an equidigital number, since it uses as much as digits as its factorization.

121001111029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 121001111029 in words is "one hundred twenty-one billion, one million, one hundred eleven thousand, twenty-nine".