1201132211121 has 24 divisors (see below), whose sum is σ = 1782285021504. Its totient is φ = 778926857760.

The previous prime is 1201132211119. The next prime is 1201132211179. The reversal of 1201132211121 is 1211122311021.

It is a happy number.

1201132211121 is a `hidden beast` number, since 1 + 201 + 132 + 211 + 121 = 666.

It is not a de Polignac number, because 1201132211121 - 2¹ = 1201132211119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201132211094 and 1201132211103.

It is not an unprimeable number, because it can be changed into a prime (1201132211221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 973980 + ... + 1830546.

It is an arithmetic number, because the mean of its divisors is an integer number (74261875896).

Almost surely, 2^{1201132211121} is an apocalyptic number.

It is an amenable number.

1201132211121 is a deficient number, since it is larger than the sum of its proper divisors (581152810383).

1201132211121 is a wasteful number, since it uses less digits than its factorization.

1201132211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860821 (or 860818 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 1201132211121 its reverse (1211122311021), we get a palindrome (2412254522142).

The spelling of 1201132211121 in words is "one trillion, two hundred one billion, one hundred thirty-two million, two hundred eleven thousand, one hundred twenty-one".