220100121029 has 2 divisors, whose sum is σ = 220100121030. Its totient is φ = 220100121028.

The previous prime is 220100120983. The next prime is 220100121071. The reversal of 220100121029 is 920121001022.

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., 190355944804 + 29744176225 = 436298^2 + 172465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220100121029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220100121029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220100121079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110050060514 + 110050060515.

It is an arithmetic number, because the mean of its divisors is an integer number (110050060515).

Almost surely, 2^220100121029 is an apocalyptic number.

It is an amenable number.

220100121029 is a deficient number, since it is larger than the sum of its proper divisors (1).

220100121029 is an equidigital number, since it uses as much as digits as its factorization.

220100121029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 220100121029 in words is "two hundred twenty billion, one hundred million, one hundred twenty-one thousand, twenty-nine".