111210200121 has 16 divisors (see below), whose sum is σ = 148818491136. Its totient is φ = 73871131776.

The previous prime is 111210200099. The next prime is 111210200131. The reversal of 111210200121 is 121002012111.

It is not a de Polignac number, because 111210200121 - 2¹⁰ = 111210199097 is a prime.

It is a super-2 number, since 2×111210200121² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111210200097 and 111210200106.

It is not an unprimeable number, because it can be changed into a prime (111210200131) 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, 5178021 + ... + 5199453.

It is an arithmetic number, because the mean of its divisors is an integer number (9301155696).

Almost surely, 2^111210200121 is an apocalyptic number.

It is an amenable number.

111210200121 is a deficient number, since it is larger than the sum of its proper divisors (37608291015).

111210200121 is a wasteful number, since it uses less digits than its factorization.

111210200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27632.

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

Adding to 111210200121 its reverse (121002012111), we get a palindrome (232212212232).

The spelling of 111210200121 in words is "one hundred eleven billion, two hundred ten million, two hundred thousand, one hundred twenty-one".