210200012121194 has 4 divisors (see below), whose sum is σ = 315300018181794. Its totient is φ = 105100006060596.

The previous prime is 210200012121191. The next prime is 210200012121221. The reversal of 210200012121194 is 491121210002012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 159735852982225 + 50464159138969 = 12638665^2 + 7103813^2 .

It is not an unprimeable number, because it can be changed into a prime (210200012121191) 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, 52550003030297 + ... + 52550003030300.

Almost surely, 2^{210200012121194} is an apocalyptic number.

210200012121194 is a deficient number, since it is larger than the sum of its proper divisors (105100006060600).

210200012121194 is a wasteful number, since it uses less digits than its factorization.

210200012121194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105100006060599.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 210200012121194 in words is "two hundred ten trillion, two hundred billion, twelve million, one hundred twenty-one thousand, one hundred ninety-four".