121002102111 has 16 divisors (see below), whose sum is σ = 176771640960. Its totient is φ = 73014364320.

The previous prime is 121002102101. The next prime is 121002102131. The reversal of 121002102111 is 111201200121.

It is not a de Polignac number, because 121002102111 - 2⁹ = 121002101599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002102101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7998405 + ... + 8013518.

It is an arithmetic number, because the mean of its divisors is an integer number (11048227560).

Almost surely, 2^121002102111 is an apocalyptic number.

121002102111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121002102111 is a deficient number, since it is larger than the sum of its proper divisors (55769538849).

121002102111 is a wasteful number, since it uses less digits than its factorization.

121002102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16012166.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121002102111 its reverse (111201200121), we get a palindrome (232203302232).

The spelling of 121002102111 in words is "one hundred twenty-one billion, two million, one hundred two thousand, one hundred eleven".