102220121190 has 64 divisors (see below), whose sum is σ = 269842793472. Its totient is φ = 24780625760.

The previous prime is 102220121189. The next prime is 102220121197. The reversal of 102220121190 is 91121022201.

It is a super-2 number, since 2×102220121190² (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 (102220121197) 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 in 31 ways as a sum of consecutive naturals, for example, 1240062 + ... + 1319921.

It is an arithmetic number, because the mean of its divisors is an integer number (4216293648).

Almost surely, 2^102220121190 is an apocalyptic number.

102220121190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102220121190 is an abundant number, since it is smaller than the sum of its proper divisors (167622672282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102220121190 is a wasteful number, since it uses less digits than its factorization.

102220121190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560026 (or 2560004 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 102220121190 its reverse (91121022201), we get a palindrome (193341143391).

The spelling of 102220121190 in words is "one hundred two billion, two hundred twenty million, one hundred twenty-one thousand, one hundred ninety".