1201321112211 has 24 divisors (see below), whose sum is σ = 1893183580080. Its totient is φ = 727999272000.

The previous prime is 1201321112177. The next prime is 1201321112219. The reversal of 1201321112211 is 1122111231021.

It is a happy number.

1201321112211 is a `hidden beast` number, since 1 + 20 + 1 + 321 + 112 + 211 = 666.

It is not a de Polignac number, because 1201321112211 - 2¹⁵ = 1201321079443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201321112219) 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, 367405 + ... + 1592993.

It is an arithmetic number, because the mean of its divisors is an integer number (78882649170).

Almost surely, 2^{1201321112211} is an apocalyptic number.

1201321112211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1201321112211 is a deficient number, since it is larger than the sum of its proper divisors (691862467869).

1201321112211 is a wasteful number, since it uses less digits than its factorization.

1201321112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235507 (or 1235504 counting only the distinct ones).

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

Adding to 1201321112211 its reverse (1122111231021), we get a palindrome (2323432343232).

The spelling of 1201321112211 in words is "one trillion, two hundred one billion, three hundred twenty-one million, one hundred twelve thousand, two hundred eleven".