121001111002111 has 8 divisors (see below), whose sum is σ = 126294562340064. Its totient is φ = 115710370786560.

The previous prime is 121001111002081. The next prime is 121001111002153. The reversal of 121001111002111 is 111200111100121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121001111002111 - 2⁹ = 121001111001599 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121001111002091 and 121001111002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001111002511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677689386 + ... + 677867911.

It is an arithmetic number, because the mean of its divisors is an integer number (15786820292508).

Almost surely, 2^{121001111002111} is an apocalyptic number.

121001111002111 is a deficient number, since it is larger than the sum of its proper divisors (5293451337953).

121001111002111 is a wasteful number, since it uses less digits than its factorization.

121001111002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355561201.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 121001111002111 its reverse (111200111100121), we get a palindrome (232201222102232).

The spelling of 121001111002111 in words is "one hundred twenty-one trillion, one billion, one hundred eleven million, two thousand, one hundred eleven".