1201021211 has 8 divisors (see below), whose sum is σ = 1294979280. Its totient is φ = 1107287712.

The previous prime is 1201021201. The next prime is 1201021249. The reversal of 1201021211 is 1121201021.

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-1201021211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201021192 and 1201021201.

It is not an unprimeable number, because it can be changed into a prime (1201021201) 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, 44945 + ... + 66498.

It is an arithmetic number, because the mean of its divisors is an integer number (161872410).

Almost surely, 2^1201021211 is an apocalyptic number.

1201021211 is a deficient number, since it is larger than the sum of its proper divisors (93958069).

1201021211 is a wasteful number, since it uses less digits than its factorization.

1201021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112285.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1201021211 is about 34655.7529279051. The cubic root of 1201021211 is about 1062.9599277736.

Adding to 1201021211 its reverse (1121201021), we get a palindrome (2322222232).

The spelling of 1201021211 in words is "one billion, two hundred one million, twenty-one thousand, two hundred eleven".