102102110121220 has 48 divisors (see below), whose sum is σ = 233907706569600. Its totient is φ = 37127872696320.

The previous prime is 102102110121211. The next prime is 102102110121229. The reversal of 102102110121220 is 22121011201201.

It is an interprime number because it is at equal distance from previous prime (102102110121211) and next prime (102102110121229).

It is a junction number, because it is equal to n+sod(n) for n = 102102110121194 and 102102110121203.

It is not an unprimeable number, because it can be changed into a prime (102102110121229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54583801 + ... + 56423359.

It is an arithmetic number, because the mean of its divisors is an integer number (4873077220200).

Almost surely, 2^{102102110121220} is an apocalyptic number.

102102110121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102102110121220 is an abundant number, since it is smaller than the sum of its proper divisors (131805596448380).

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

102102110121220 is a wasteful number, since it uses less digits than its factorization.

102102110121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091868 (or 2091866 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102102110121220 its reverse (22121011201201), we get a palindrome (124223121322421).

The spelling of 102102110121220 in words is "one hundred two trillion, one hundred two billion, one hundred ten million, one hundred twenty-one thousand, two hundred twenty".