1021002120211 has 2 divisors, whose sum is σ = 1021002120212. Its totient is φ = 1021002120210.

The previous prime is 1021002120197. The next prime is 1021002120239. The reversal of 1021002120211 is 1120212001201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021002120211 - 2⁹ = 1021002119699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021002120191 and 1021002120200.

It is not a weakly prime, because it can be changed into another prime (1021002120241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510501060105 + 510501060106.

It is an arithmetic number, because the mean of its divisors is an integer number (510501060106).

Almost surely, 2^{1021002120211} is an apocalyptic number.

1021002120211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021002120211 is an equidigital number, since it uses as much as digits as its factorization.

1021002120211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1021002120211 its reverse (1120212001201), we get a palindrome (2141214121412).

The spelling of 1021002120211 in words is "one trillion, twenty-one billion, two million, one hundred twenty thousand, two hundred eleven".