121000102111 has 20 divisors (see below), whose sum is σ = 141400507752. Its totient is φ = 103536481776.

The previous prime is 121000102051. The next prime is 121000102121. The reversal of 121000102111 is 111201000121.

It is not a de Polignac number, because 121000102111 - 2⁷ = 121000101983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000102121) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1366461 + ... + 1452313.

Almost surely, 2^121000102111 is an apocalyptic number.

121000102111 is a deficient number, since it is larger than the sum of its proper divisors (20400405641).

121000102111 is an frugal number, since it uses more digits than its factorization.

121000102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86468 (or 86447 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121000102111 its reverse (111201000121), we get a palindrome (232201102232).

The spelling of 121000102111 in words is "one hundred twenty-one billion, one hundred two thousand, one hundred eleven".