111210010200121 has 4 divisors (see below), whose sum is σ = 127097154514432. Its totient is φ = 95322865885812.

The previous prime is 111210010200119. The next prime is 111210010200221. The reversal of 111210010200121 is 121002010012111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111210010200121 - 2¹ = 111210010200119 is a prime.

It is a super-2 number, since 2×111210010200121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111210010200221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7943572157145 + ... + 7943572157158.

It is an arithmetic number, because the mean of its divisors is an integer number (31774288628608).

Almost surely, 2^{111210010200121} is an apocalyptic number.

It is an amenable number.

111210010200121 is a deficient number, since it is larger than the sum of its proper divisors (15887144314311).

111210010200121 is an equidigital number, since it uses as much as digits as its factorization.

111210010200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15887144314310.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111210010200121 its reverse (121002010012111), we get a palindrome (232212020212232).

The spelling of 111210010200121 in words is "one hundred eleven trillion, two hundred ten billion, ten million, two hundred thousand, one hundred twenty-one".