102121114421 has 4 divisors (see below), whose sum is σ = 102797413344. Its totient is φ = 101444815500.

The previous prime is 102121114363. The next prime is 102121114441. The reversal of 102121114421 is 124411121201.

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 a de Polignac number, because none of the positive numbers 2^k-102121114421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102121114393 and 102121114402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121114441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338149235 + ... + 338149536.

It is an arithmetic number, because the mean of its divisors is an integer number (25699353336).

Almost surely, 2^102121114421 is an apocalyptic number.

It is an amenable number.

102121114421 is a deficient number, since it is larger than the sum of its proper divisors (676298923).

102121114421 is an equidigital number, since it uses as much as digits as its factorization.

102121114421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676298922.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102121114421 its reverse (124411121201), we get a palindrome (226532235622).

The spelling of 102121114421 in words is "one hundred two billion, one hundred twenty-one million, one hundred fourteen thousand, four hundred twenty-one".