102111222210220 has 24 divisors (see below), whose sum is σ = 214783376727024. Its totient is φ = 40777858391616.

The previous prime is 102111222210199. The next prime is 102111222210227. The reversal of 102111222210220 is 22012222111201.

It is not an unprimeable number, because it can be changed into a prime (102111222210227) 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, 4164393214 + ... + 4164417733.

It is an arithmetic number, because the mean of its divisors is an integer number (8949307363626).

Almost surely, 2^{102111222210220} is an apocalyptic number.

102111222210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102111222210220 is an abundant number, since it is smaller than the sum of its proper divisors (112672154516804).

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

102111222210220 is a wasteful number, since it uses less digits than its factorization.

102111222210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8328811569 (or 8328811567 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102111222210220 its reverse (22012222111201), we get a palindrome (124123444321421).

The spelling of 102111222210220 in words is "one hundred two trillion, one hundred eleven billion, two hundred twenty-two million, two hundred ten thousand, two hundred twenty".