100000012121029 has 2 divisors, whose sum is σ = 100000012121030. Its totient is φ = 100000012121028.

The previous prime is 100000012120993. The next prime is 100000012121041. The reversal of 100000012121029 is 920121210000001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75953002870404 + 24047009250625 = 8715102^2 + 4903775^2 .

It is a cyclic number.

It is not a de Polignac number, because 100000012121029 - 2¹⁵ = 100000012088261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100000012120997 and 100000012121015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100000012121059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000006060514 + 50000006060515.

It is an arithmetic number, because the mean of its divisors is an integer number (50000006060515).

Almost surely, 2^{100000012121029} is an apocalyptic number.

It is an amenable number.

100000012121029 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000012121029 is an equidigital number, since it uses as much as digits as its factorization.

100000012121029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 100000012121029 in words is "one hundred trillion, twelve million, one hundred twenty-one thousand, twenty-nine".