1211101122012 has 96 divisors (see below), whose sum is σ = 2863525896000. Its totient is φ = 398359130112.

The previous prime is 1211101121987. The next prime is 1211101122031. The reversal of 1211101122012 is 2102211011121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1211101121982 and 1211101122000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 681541668 + ... + 681543444.

It is an arithmetic number, because the mean of its divisors is an integer number (29828394750).

Almost surely, 2^{1211101122012} is an apocalyptic number.

1211101122012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211101122012 is an abundant number, since it is smaller than the sum of its proper divisors (1652424773988).

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

1211101122012 is a wasteful number, since it uses less digits than its factorization.

1211101122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735 (or 3733 counting only the distinct ones).

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

Adding to 1211101122012 its reverse (2102211011121), we get a palindrome (3313312133133).

The spelling of 1211101122012 in words is "one trillion, two hundred eleven billion, one hundred one million, one hundred twenty-two thousand, twelve".