102220121188 has 12 divisors (see below), whose sum is σ = 180293757952. Its totient is φ = 50707618920.

The previous prime is 102220121177. The next prime is 102220121189. The reversal of 102220121188 is 881121022201.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (102220121189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100609848 + ... + 100610863.

Almost surely, 2^102220121188 is an apocalyptic number.

It is an amenable number.

102220121188 is a deficient number, since it is larger than the sum of its proper divisors (78073636764).

102220121188 is a wasteful number, since it uses less digits than its factorization.

102220121188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201220842 (or 201220840 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 28.

Adding to 102220121188 its reverse (881121022201), we get a palindrome (983341143389).

The spelling of 102220121188 in words is "one hundred two billion, two hundred twenty million, one hundred twenty-one thousand, one hundred eighty-eight".