1201001121211 has 8 divisors (see below), whose sum is σ = 1202003566848. Its totient is φ = 1199998800000.

The previous prime is 1201001121149. The next prime is 1201001121247. The reversal of 1201001121211 is 1121211001021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201001121211 is a prime.

It is a super-2 number, since 2×1201001121211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201001121191 and 1201001121200.

It is not an unprimeable number, because it can be changed into a prime (1201001121511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36868371 + ... + 36900931.

It is an arithmetic number, because the mean of its divisors is an integer number (150250445856).

Almost surely, 2^{1201001121211} is an apocalyptic number.

1201001121211 is a deficient number, since it is larger than the sum of its proper divisors (1002445637).

1201001121211 is a wasteful number, since it uses less digits than its factorization.

1201001121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62213.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1201001121211 its reverse (1121211001021), we get a palindrome (2322212122232).

The spelling of 1201001121211 in words is "one trillion, two hundred one billion, one million, one hundred twenty-one thousand, two hundred eleven".