102000111220 has 24 divisors (see below), whose sum is σ = 244800267264. Its totient is φ = 34971466656.

The previous prime is 102000111211. The next prime is 102000111229. The reversal of 102000111220 is 22111000201.

It is an interprime number because it is at equal distance from previous prime (102000111211) and next prime (102000111229).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 102000111197 and 102000111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102000111229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364285972 + ... + 364286251.

It is an arithmetic number, because the mean of its divisors is an integer number (10200011136).

Almost surely, 2^102000111220 is an apocalyptic number.

102000111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102000111220 is an abundant number, since it is smaller than the sum of its proper divisors (142800156044).

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

102000111220 is a wasteful number, since it uses less digits than its factorization.

102000111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728572239 (or 728572237 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 102000111220 its reverse (22111000201), we get a palindrome (124111111421).

The spelling of 102000111220 in words is "one hundred two billion, one hundred eleven thousand, two hundred twenty".