1021231020211 has 8 divisors (see below), whose sum is σ = 1038203654400. Its totient is φ = 1004309279688.

The previous prime is 1021231020193. The next prime is 1021231020253. The reversal of 1021231020211 is 1120201321201.

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-1021231020211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021231020611) 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, 12682951 + ... + 12763216.

It is an arithmetic number, because the mean of its divisors is an integer number (129775456800).

Almost surely, 2^{1021231020211} is an apocalyptic number.

1021231020211 is a deficient number, since it is larger than the sum of its proper divisors (16972634189).

1021231020211 is an equidigital number, since it uses as much as digits as its factorization.

1021231020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25446833.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1021231020211 its reverse (1120201321201), we get a palindrome (2141432341412).

The spelling of 1021231020211 in words is "one trillion, twenty-one billion, two hundred thirty-one million, twenty thousand, two hundred eleven".