102120223113121 has 4 divisors (see below), whose sum is σ = 102190796869312. Its totient is φ = 102049649356932.

The previous prime is 102120223113113. The next prime is 102120223113191. The reversal of 102120223113121 is 121311322021201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102120223113121 - 2³ = 102120223113113 is a prime.

It is a super-2 number, since 2×102120223113121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102120223113092 and 102120223113101.

It is not an unprimeable number, because it can be changed into a prime (102120223113191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35286875925 + ... + 35286878818.

It is an arithmetic number, because the mean of its divisors is an integer number (25547699217328).

Almost surely, 2^{102120223113121} is an apocalyptic number.

It is an amenable number.

102120223113121 is a deficient number, since it is larger than the sum of its proper divisors (70573756191).

102120223113121 is an equidigital number, since it uses as much as digits as its factorization.

102120223113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70573756190.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 102120223113121 its reverse (121311322021201), we get a palindrome (223431545134322).

The spelling of 102120223113121 in words is "one hundred two trillion, one hundred twenty billion, two hundred twenty-three million, one hundred thirteen thousand, one hundred twenty-one".