1021200221011 has 2 divisors, whose sum is σ = 1021200221012. Its totient is φ = 1021200221010.

The previous prime is 1021200220903. The next prime is 1021200221033. The reversal of 1021200221011 is 1101220021201.

1021200221011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021200221011 - 2¹¹ = 1021200218963 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021200220982 and 1021200221000.

It is not a weakly prime, because it can be changed into another prime (1021200221911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510600110505 + 510600110506.

It is an arithmetic number, because the mean of its divisors is an integer number (510600110506).

Almost surely, 2^{1021200221011} is an apocalyptic number.

1021200221011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021200221011 is an equidigital number, since it uses as much as digits as its factorization.

1021200221011 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 13.

Adding to 1021200221011 its reverse (1101220021201), we get a palindrome (2122420242212).

The spelling of 1021200221011 in words is "one trillion, twenty-one billion, two hundred million, two hundred twenty-one thousand, eleven".