1211000001112 has 96 divisors (see below), whose sum is σ = 2589208675200. Its totient is φ = 529963427840.

The previous prime is 1211000001061. The next prime is 1211000001163. The reversal of 1211000001112 is 2111000001121.

It is an interprime number because it is at equal distance from previous prime (1211000001061) and next prime (1211000001163).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9848313 + ... + 9970519.

It is an arithmetic number, because the mean of its divisors is an integer number (26970923700).

Almost surely, 2^{1211000001112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1211000001112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294604337600).

1211000001112 is an abundant number, since it is smaller than the sum of its proper divisors (1378208674088).

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

1211000001112 is a wasteful number, since it uses less digits than its factorization.

1211000001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122617 (or 122602 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1211000001112 its reverse (2111000001121), we get a palindrome (3322000002233).

Subtracting 1211000001112 from its reverse (2111000001121), we obtain a palindrome (900000000009).

The spelling of 1211000001112 in words is "one trillion, two hundred eleven billion, one thousand, one hundred twelve".