1200210111121 has 16 divisors (see below), whose sum is σ = 1413250113024. Its totient is φ = 997952868864.

The previous prime is 1200210111119. The next prime is 1200210111143. The reversal of 1200210111121 is 1211110120021.

It is a happy number.

It is not a de Polignac number, because 1200210111121 - 2¹ = 1200210111119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200210111151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16104660 + ... + 16179013.

It is an arithmetic number, because the mean of its divisors is an integer number (88328132064).

Almost surely, 2^{1200210111121} is an apocalyptic number.

It is an amenable number.

1200210111121 is a deficient number, since it is larger than the sum of its proper divisors (213040001903).

1200210111121 is a wasteful number, since it uses less digits than its factorization.

1200210111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32283840.

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

Adding to 1200210111121 its reverse (1211110120021), we get a palindrome (2411320231142).

The spelling of 1200210111121 in words is "one trillion, two hundred billion, two hundred ten million, one hundred eleven thousand, one hundred twenty-one".