1101220111212 has 48 divisors (see below), whose sum is σ = 2767247542752. Its totient is φ = 338827276800.

The previous prime is 1101220111139. The next prime is 1101220111261. The reversal of 1101220111212 is 2121110221011.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1101220111191 and 1101220111200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6953712 + ... + 7110312.

It is an arithmetic number, because the mean of its divisors is an integer number (57650990474).

Almost surely, 2^{1101220111212} is an apocalyptic number.

1101220111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1101220111212 is an abundant number, since it is smaller than the sum of its proper divisors (1666027431540).

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

1101220111212 is a wasteful number, since it uses less digits than its factorization.

1101220111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201698 (or 201696 counting only the distinct ones).

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

Adding to 1101220111212 its reverse (2121110221011), we get a palindrome (3222330332223).

The spelling of 1101220111212 in words is "one trillion, one hundred one billion, two hundred twenty million, one hundred eleven thousand, two hundred twelve".