102100222112220 has 48 divisors (see below), whose sum is σ = 317645135461920. Its totient is φ = 27226725896448.

The previous prime is 102100222112209. The next prime is 102100222112401. The reversal of 102100222112220 is 22211222001201.

It is a happy number.

102100222112220 is a `hidden beast` number, since 1 + 0 + 210 + 0 + 2 + 221 + 12 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 102100222112193 and 102100222112202.

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, 94537242157 + ... + 94537243236.

It is an arithmetic number, because the mean of its divisors is an integer number (6617606988790).

Almost surely, 2^{102100222112220} is an apocalyptic number.

102100222112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102100222112220 is an abundant number, since it is smaller than the sum of its proper divisors (215544913349700).

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

102100222112220 is a wasteful number, since it uses less digits than its factorization.

102100222112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189074485411 (or 189074485403 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 102100222112220 its reverse (22211222001201), we get a palindrome (124311444113421).

The spelling of 102100222112220 in words is "one hundred two trillion, one hundred billion, two hundred twenty-two million, one hundred twelve thousand, two hundred twenty".