102000101220 has 144 divisors (see below), whose sum is σ = 326002535040. Its totient is φ = 25743287808.

The previous prime is 102000101213. The next prime is 102000101261. The reversal of 102000101220 is 22101000201.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3621432 + ... + 3649488.

Almost surely, 2^102000101220 is an apocalyptic number.

102000101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102000101220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163001267520).

102000101220 is an abundant number, since it is smaller than the sum of its proper divisors (224002433820).

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

102000101220 is a wasteful number, since it uses less digits than its factorization.

102000101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29154 (or 29149 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 102000101220 its reverse (22101000201), we get a palindrome (124101101421).

The spelling of 102000101220 in words is "one hundred two billion, one hundred one thousand, two hundred twenty".