102110121221020 has 48 divisors (see below), whose sum is σ = 238902132768768. Its totient is φ = 36340932887360.

The previous prime is 102110121220963. The next prime is 102110121221047. The reversal of 102110121221020 is 20122121011201.

It is a junction number, because it is equal to n+sod(n) for n = 102110121220985 and 102110121221003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4937616412 + ... + 4937637091.

It is an arithmetic number, because the mean of its divisors is an integer number (4977127766016).

Almost surely, 2^{102110121221020} is an apocalyptic number.

102110121221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102110121221020 is an abundant number, since it is smaller than the sum of its proper divisors (136792011547748).

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

102110121221020 is a wasteful number, since it uses less digits than its factorization.

102110121221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9875253570 (or 9875253568 counting only the distinct ones).

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

Adding to 102110121221020 its reverse (20122121011201), we get a palindrome (122232242232221).

The spelling of 102110121221020 in words is "one hundred two trillion, one hundred ten billion, one hundred twenty-one million, two hundred twenty-one thousand, twenty".