1011211020211 has 8 divisors (see below), whose sum is σ = 1159753378304. Its totient is φ = 863689572360.

The previous prime is 1011211020151. The next prime is 1011211020221. The reversal of 1011211020211 is 1120201121101.

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-1011211020211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011211020191 and 1011211020200.

It is not an unprimeable number, because it can be changed into a prime (1011211020221) 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, 255225435 + ... + 255229396.

It is an arithmetic number, because the mean of its divisors is an integer number (144969172288).

Almost surely, 2^{1011211020211} is an apocalyptic number.

1011211020211 is a deficient number, since it is larger than the sum of its proper divisors (148542358093).

1011211020211 is an equidigital number, since it uses as much as digits as its factorization.

1011211020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510455121.

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

Adding to 1011211020211 its reverse (1120201121101), we get a palindrome (2131412141312).

The spelling of 1011211020211 in words is "one trillion, eleven billion, two hundred eleven million, twenty thousand, two hundred eleven".