1101121221012 has 12 divisors (see below), whose sum is σ = 2569282849056. Its totient is φ = 367040407000.

The previous prime is 1101121221001. The next prime is 1101121221043. The reversal of 1101121221012 is 2101221211011.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1101121220982 and 1101121221000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45880050864 + ... + 45880050887.

It is an arithmetic number, because the mean of its divisors is an integer number (214106904088).

Almost surely, 2^{1101121221012} is an apocalyptic number.

1101121221012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101121221012 is an abundant number, since it is smaller than the sum of its proper divisors (1468161628044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1101121221012 is a wasteful number, since it uses less digits than its factorization.

1101121221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91760101758 (or 91760101756 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1101121221012 its reverse (2101221211011), we get a palindrome (3202342432023).

The spelling of 1101121221012 in words is "one trillion, one hundred one billion, one hundred twenty-one million, two hundred twenty-one thousand, twelve".