1121210012011 has 4 divisors (see below), whose sum is σ = 1142364917952. Its totient is φ = 1100055106072.

The previous prime is 1121210012009. The next prime is 1121210012029. The reversal of 1121210012011 is 1102100121211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1121210012011 - 2¹ = 1121210012009 is a prime.

It is a super-2 number, since 2×1121210012011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121210011982 and 1121210012000.

It is not an unprimeable number, because it can be changed into a prime (1121210012071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10577452891 + ... + 10577452996.

It is an arithmetic number, because the mean of its divisors is an integer number (285591229488).

Almost surely, 2^{1121210012011} is an apocalyptic number.

1121210012011 is a deficient number, since it is larger than the sum of its proper divisors (21154905941).

1121210012011 is an equidigital number, since it uses as much as digits as its factorization.

1121210012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21154905940.

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

Adding to 1121210012011 its reverse (1102100121211), we get a palindrome (2223310133222).

The spelling of 1121210012011 in words is "one trillion, one hundred twenty-one billion, two hundred ten million, twelve thousand, eleven".