210100220120929 has 2 divisors, whose sum is σ = 210100220120930. Its totient is φ = 210100220120928.

The previous prime is 210100220120899. The next prime is 210100220120977. The reversal of 210100220120929 is 929021022001012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183360441334225 + 26739778786704 = 13541065^2 + 5171052^2 .

It is a cyclic number.

It is not a de Polignac number, because 210100220120929 - 2⁵ = 210100220120897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210100220120929.

It is not a weakly prime, because it can be changed into another prime (210100220120729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105050110060464 + 105050110060465.

It is an arithmetic number, because the mean of its divisors is an integer number (105050110060465).

Almost surely, 2^{210100220120929} is an apocalyptic number.

It is an amenable number.

210100220120929 is a deficient number, since it is larger than the sum of its proper divisors (1).

210100220120929 is an equidigital number, since it uses as much as digits as its factorization.

210100220120929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 210100220120929 in words is "two hundred ten trillion, one hundred billion, two hundred twenty million, one hundred twenty thousand, nine hundred twenty-nine".