102121102111 has 16 divisors (see below), whose sum is σ = 118378280704. Its totient is φ = 86282449344.

The previous prime is 102121102103. The next prime is 102121102117. The reversal of 102121102111 is 111201121201.

It is a happy number.

It is not a de Polignac number, because 102121102111 - 2³ = 102121102103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102121102091 and 102121102100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121102117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 822460 + ... + 938446.

It is an arithmetic number, because the mean of its divisors is an integer number (7398642544).

Almost surely, 2^102121102111 is an apocalyptic number.

102121102111 is a deficient number, since it is larger than the sum of its proper divisors (16257178593).

102121102111 is a wasteful number, since it uses less digits than its factorization.

102121102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117790.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102121102111 its reverse (111201121201), we get a palindrome (213322223312).

The spelling of 102121102111 in words is "one hundred two billion, one hundred twenty-one million, one hundred two thousand, one hundred eleven".