1121022012011 has 4 divisors (see below), whose sum is σ = 1222933104024. Its totient is φ = 1019110920000.

The previous prime is 1121022011959. The next prime is 1121022012119. The reversal of 1121022012011 is 1102102201211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121022012011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121022012511) 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, 50955545990 + ... + 50955546011.

It is an arithmetic number, because the mean of its divisors is an integer number (305733276006).

Almost surely, 2^{1121022012011} is an apocalyptic number.

1121022012011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1121022012011 is a deficient number, since it is larger than the sum of its proper divisors (101911092013).

1121022012011 is a wasteful number, since it uses less digits than its factorization.

1121022012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101911092012.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1121022012011 its reverse (1102102201211), we get a palindrome (2223124213222).

The spelling of 1121022012011 in words is "one trillion, one hundred twenty-one billion, twenty-two million, twelve thousand, eleven".