1021111020211 has 8 divisors (see below), whose sum is σ = 1023214566080. Its totient is φ = 1019009598912.

The previous prime is 1021111020203. The next prime is 1021111020247. The reversal of 1021111020211 is 1120201111201.

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 not a de Polignac number, because 1021111020211 - 2³ = 1021111020203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021111020191 and 1021111020200.

It is not an unprimeable number, because it can be changed into a prime (1021111020011) 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, 432886 + ... + 1493188.

It is an arithmetic number, because the mean of its divisors is an integer number (127901820760).

Almost surely, 2^{1021111020211} is an apocalyptic number.

1021111020211 is a deficient number, since it is larger than the sum of its proper divisors (2103545869).

1021111020211 is a wasteful number, since it uses less digits than its factorization.

1021111020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062285.

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

Adding to 1021111020211 its reverse (1120201111201), we get a palindrome (2141312131412).

The spelling of 1021111020211 in words is "one trillion, twenty-one billion, one hundred eleven million, twenty thousand, two hundred eleven".