1020211221011 has 2 divisors, whose sum is σ = 1020211221012. Its totient is φ = 1020211221010.

The previous prime is 1020211220989. The next prime is 1020211221041. The reversal of 1020211221011 is 1101221120201.

1020211221011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020211221011 - 2³⁸ = 745333314067 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020211221041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510105610505 + 510105610506.

It is an arithmetic number, because the mean of its divisors is an integer number (510105610506).

Almost surely, 2^{1020211221011} is an apocalyptic number.

1020211221011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020211221011 is an equidigital number, since it uses as much as digits as its factorization.

1020211221011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1020211221011 its reverse (1101221120201), we get a palindrome (2121432341212).

The spelling of 1020211221011 in words is "one trillion, twenty billion, two hundred eleven million, two hundred twenty-one thousand, eleven".