1201120011121 has 8 divisors (see below), whose sum is σ = 1202714978024. Its totient is φ = 1199525483520.

The previous prime is 1201120011103. The next prime is 1201120011137. The reversal of 1201120011121 is 1211100211021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1974558096 + 1199145453025 = 44436^2 + 1095055^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201120011121 - 2⁹ = 1201120010609 is a prime.

It is a super-2 number, since 2×1201120011121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201120011191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5555281 + ... + 5767441.

It is an arithmetic number, because the mean of its divisors is an integer number (150339372253).

Almost surely, 2^{1201120011121} is an apocalyptic number.

It is an amenable number.

1201120011121 is a deficient number, since it is larger than the sum of its proper divisors (1594966903).

1201120011121 is an equidigital number, since it uses as much as digits as its factorization.

1201120011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219651.

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

Adding to 1201120011121 its reverse (1211100211021), we get a palindrome (2412220222142).

The spelling of 1201120011121 in words is "one trillion, two hundred one billion, one hundred twenty million, eleven thousand, one hundred twenty-one".