1211222001112 has 128 divisors (see below), whose sum is σ = 2364214469760. Its totient is φ = 581447393280.

The previous prime is 1211222001061. The next prime is 1211222001113. The reversal of 1211222001112 is 2111002221121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211222001113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1652417098 + ... + 1652417830.

It is an arithmetic number, because the mean of its divisors is an integer number (18470425545).

Almost surely, 2^{1211222001112} is an apocalyptic number.

It is an amenable number.

1211222001112 is a deficient number, since it is larger than the sum of its proper divisors (1152992468648).

1211222001112 is a wasteful number, since it uses less digits than its factorization.

1211222001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293 (or 1289 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1211222001112 its reverse (2111002221121), we get a palindrome (3322224222233).

The spelling of 1211222001112 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, one thousand, one hundred twelve".