121111211200011 has 16 divisors (see below), whose sum is σ = 162452244729600. Its totient is φ = 80255514438368.

The previous prime is 121111211200003. The next prime is 121111211200019. The reversal of 121111211200011 is 110002112111121.

It is an interprime number because it is at equal distance from previous prime (121111211200003) and next prime (121111211200019).

It is a cyclic number.

It is not a de Polignac number, because 121111211200011 - 2³ = 121111211200003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121111211200019) 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, 19622725 + ... + 25045433.

It is an arithmetic number, because the mean of its divisors is an integer number (10153265295600).

Almost surely, 2^{121111211200011} is an apocalyptic number.

121111211200011 is a deficient number, since it is larger than the sum of its proper divisors (41341033529589).

121111211200011 is a wasteful number, since it uses less digits than its factorization.

121111211200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5467458.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 121111211200011 its reverse (110002112111121), we get a palindrome (231113323311132).

The spelling of 121111211200011 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred eleven million, two hundred thousand, eleven".