1211200211120 has 40 divisors (see below), whose sum is σ = 2823393148416. Its totient is φ = 483215111168.

The previous prime is 1211200211069. The next prime is 1211200211129. The reversal of 1211200211120 is 211120021121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1211200211095 and 1211200211104.

It is not an unprimeable number, because it can be changed into a prime (1211200211129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19734377 + ... + 19795656.

Almost surely, 2^{1211200211120} is an apocalyptic number.

1211200211120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211200211120 is an abundant number, since it is smaller than the sum of its proper divisors (1612192937296).

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

1211200211120 is a wasteful number, since it uses less digits than its factorization.

1211200211120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39530429 (or 39530423 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211200211120 its reverse (211120021121), we get a palindrome (1422320232241).

The spelling of 1211200211120 in words is "one trillion, two hundred eleven billion, two hundred million, two hundred eleven thousand, one hundred twenty".