102011220102 has 128 divisors (see below), whose sum is σ = 240660730368. Its totient is φ = 28482969600.

The previous prime is 102011220083. The next prime is 102011220109. The reversal of 102011220102 is 201022110201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011220109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11216577 + ... + 11225667.

It is an arithmetic number, because the mean of its divisors is an integer number (1880161956).

Almost surely, 2^102011220102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102011220102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120330365184).

102011220102 is an abundant number, since it is smaller than the sum of its proper divisors (138649510266).

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

102011220102 is a wasteful number, since it uses less digits than its factorization.

102011220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9334.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102011220102 its reverse (201022110201), we get a palindrome (303033330303).

The spelling of 102011220102 in words is "one hundred two billion, eleven million, two hundred twenty thousand, one hundred two".