121000102122111 has 16 divisors (see below), whose sum is σ = 161354167719264. Its totient is φ = 80656386269184.

The previous prime is 121000102122089. The next prime is 121000102122131. The reversal of 121000102122111 is 111221201000121.

It is a happy number.

It is not a de Polignac number, because 121000102122111 - 2⁵ = 121000102122079 is a prime.

It is a super-2 number, since 2×121000102122111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000102122131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1035608751 + ... + 1035725583.

It is an arithmetic number, because the mean of its divisors is an integer number (10084635482454).

Almost surely, 2^{121000102122111} is an apocalyptic number.

121000102122111 is a deficient number, since it is larger than the sum of its proper divisors (40354065597153).

121000102122111 is a wasteful number, since it uses less digits than its factorization.

121000102122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158170.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121000102122111 its reverse (111221201000121), we get a palindrome (232221303122232).

The spelling of 121000102122111 in words is "one hundred twenty-one trillion, one hundred two million, one hundred twenty-two thousand, one hundred eleven".