102122020190 has 32 divisors (see below), whose sum is σ = 184471016544. Its totient is φ = 40704215040.

The previous prime is 102122020183. The next prime is 102122020193. The reversal of 102122020190 is 91020221201.

It is a happy number.

It is a super-2 number, since 2×102122020190² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102122020193) 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 in 15 ways as a sum of consecutive naturals, for example, 5740910 + ... + 5758670.

It is an arithmetic number, because the mean of its divisors is an integer number (5764719267).

Almost surely, 2^102122020190 is an apocalyptic number.

102122020190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102122020190 is a deficient number, since it is larger than the sum of its proper divisors (82348996354).

102122020190 is a wasteful number, since it uses less digits than its factorization.

102122020190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19772.

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

Adding to 102122020190 its reverse (91020221201), we get a palindrome (193142241391).

The spelling of 102122020190 in words is "one hundred two billion, one hundred twenty-two million, twenty thousand, one hundred ninety".