121000100029 has 2 divisors, whose sum is σ = 121000100030. Its totient is φ = 121000100028.

The previous prime is 121000100021. The next prime is 121000100051. The reversal of 121000100029 is 920001000121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116623616004 + 4376484025 = 341502^2 + 66155^2 .

It is a cyclic number.

It is not a de Polignac number, because 121000100029 - 2³ = 121000100021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121000099985 and 121000100021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000100021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500050014 + 60500050015.

It is an arithmetic number, because the mean of its divisors is an integer number (60500050015).

Almost surely, 2^121000100029 is an apocalyptic number.

It is an amenable number.

121000100029 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000100029 is an equidigital number, since it uses as much as digits as its factorization.

121000100029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

The spelling of 121000100029 in words is "one hundred twenty-one billion, one hundred thousand, twenty-nine".