102120221223 has 24 divisors (see below), whose sum is σ = 155188649616. Its totient is φ = 64624521600.

The previous prime is 102120221209. The next prime is 102120221243. The reversal of 102120221223 is 322122021201.

102120221223 is a `hidden beast` number, since 10 + 212 + 0 + 221 + 223 = 666.

It is not a de Polignac number, because 102120221223 - 2³² = 97825253927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102120221196 and 102120221205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120221243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3726193 + ... + 3753498.

It is an arithmetic number, because the mean of its divisors is an integer number (6466193734).

Almost surely, 2^102120221223 is an apocalyptic number.

102120221223 is a deficient number, since it is larger than the sum of its proper divisors (53068428393).

102120221223 is a wasteful number, since it uses less digits than its factorization.

102120221223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7479775 (or 7479772 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 102120221223 its reverse (322122021201), we get a palindrome (424242242424).

The spelling of 102120221223 in words is "one hundred two billion, one hundred twenty million, two hundred twenty-one thousand, two hundred twenty-three".