1121222212011 has 192 divisors, whose sum is σ = 1970757734400. Its totient is φ = 629849001600.

The previous prime is 1121222211953. The next prime is 1121222212063. The reversal of 1121222212011 is 1102122221211.

It is not a de Polignac number, because 1121222212011 - 2⁶ = 1121222211947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121222212211) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 501215785 + ... + 501218021.

It is an arithmetic number, because the mean of its divisors is an integer number (10264363200).

Almost surely, 2^{1121222212011} is an apocalyptic number.

1121222212011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1121222212011 is a deficient number, since it is larger than the sum of its proper divisors (849535522389).

1121222212011 is a wasteful number, since it uses less digits than its factorization.

1121222212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492 (or 2480 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1121222212011 its reverse (1102122221211), we get a palindrome (2223344433222).

The spelling of 1121222212011 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred twelve thousand, eleven".