121200010002111 has 16 divisors (see below), whose sum is σ = 165968026989408. Its totient is φ = 78616011571200.

The previous prime is 121200010002077. The next prime is 121200010002119. The reversal of 121200010002111 is 111200010002121.

It is not a de Polignac number, because 121200010002111 - 2¹⁰ = 121200010001087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121200010002119) 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, 47335231 + ... + 49829951.

It is an arithmetic number, because the mean of its divisors is an integer number (10373001686838).

Almost surely, 2^{121200010002111} is an apocalyptic number.

121200010002111 is a deficient number, since it is larger than the sum of its proper divisors (44768016987297).

121200010002111 is a wasteful number, since it uses less digits than its factorization.

121200010002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2932442.

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

Adding to 121200010002111 its reverse (111200010002121), we get a palindrome (232400020004232).

The spelling of 121200010002111 in words is "one hundred twenty-one trillion, two hundred billion, ten million, two thousand, one hundred eleven".