1211130220112 has 20 divisors (see below), whose sum is σ = 2352138602676. Its totient is φ = 604126709760.

The previous prime is 1211130220049. The next prime is 1211130220117. The reversal of 1211130220112 is 2110220311121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40311002176 + 1170819217936 = 200776^2 + 1082044^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211130220117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89893073 + ... + 89906544.

Almost surely, 2^{1211130220112} is an apocalyptic number.

It is an amenable number.

1211130220112 is a deficient number, since it is larger than the sum of its proper divisors (1141008382564).

1211130220112 is a wasteful number, since it uses less digits than its factorization.

1211130220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179800046 (or 179800040 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1211130220112 its reverse (2110220311121), we get a palindrome (3321350531233).

The spelling of 1211130220112 in words is "one trillion, two hundred eleven billion, one hundred thirty million, two hundred twenty thousand, one hundred twelve".