102220010194 has 4 divisors (see below), whose sum is σ = 153330015294. Its totient is φ = 51110005096.

The previous prime is 102220010153. The next prime is 102220010197. The reversal of 102220010194 is 491010022201.

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., 101936525625 + 283484569 = 319275^2 + 16837^2 .

It is a super-2 number, since 2×102220010194² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102220010197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25555002547 + ... + 25555002550.

Almost surely, 2^102220010194 is an apocalyptic number.

102220010194 is a deficient number, since it is larger than the sum of its proper divisors (51110005100).

102220010194 is an equidigital number, since it uses as much as digits as its factorization.

102220010194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51110005099.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 102220010194 its reverse (491010022201), we get a palindrome (593230032395).

The spelling of 102220010194 in words is "one hundred two billion, two hundred twenty million, ten thousand, one hundred ninety-four".