1211001100112 has 40 divisors (see below), whose sum is σ = 2448597148800. Its totient is φ = 579110843520.

The previous prime is 1211001100087. The next prime is 1211001100121. The reversal of 1211001100112 is 2110011001121.

It is a junction number, because it is equal to n+sod(n) for n = 1211001100093 and 1211001100102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3264437 + ... + 3616427.

It is an arithmetic number, because the mean of its divisors is an integer number (61214928720).

Almost surely, 2^{1211001100112} is an apocalyptic number.

It is an amenable number.

1211001100112 is an abundant number, since it is smaller than the sum of its proper divisors (1237596048688).

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

1211001100112 is a wasteful number, since it uses less digits than its factorization.

1211001100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361371 (or 361365 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1211001100112 its reverse (2110011001121), we get a palindrome (3321012101233).

The spelling of 1211001100112 in words is "one trillion, two hundred eleven billion, one million, one hundred thousand, one hundred twelve".