102111220220 has 48 divisors (see below), whose sum is σ = 219470283648. Its totient is φ = 39885545280.

The previous prime is 102111220217. The next prime is 102111220223. The reversal of 102111220220 is 22022111201.

It is an interprime number because it is at equal distance from previous prime (102111220217) and next prime (102111220223).

It is a junction number, because it is equal to n+sod(n) for n = 102111220195 and 102111220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111220223) 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, 4745927 + ... + 4767393.

It is an arithmetic number, because the mean of its divisors is an integer number (4572297576).

Almost surely, 2^102111220220 is an apocalyptic number.

102111220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102111220220 is an abundant number, since it is smaller than the sum of its proper divisors (117359063428).

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

102111220220 is a wasteful number, since it uses less digits than its factorization.

102111220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27050 (or 27048 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102111220220 its reverse (22022111201), we get a palindrome (124133331421).

The spelling of 102111220220 in words is "one hundred two billion, one hundred eleven million, two hundred twenty thousand, two hundred twenty".