1021020102211 has 4 divisors (see below), whose sum is σ = 1065412280592. Its totient is φ = 976627923832.

The previous prime is 1021020102197. The next prime is 1021020102227. The reversal of 1021020102211 is 1122010201201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021020102211 - 2¹³ = 1021020094019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021020102191 and 1021020102200.

It is not an unprimeable number, because it can be changed into a prime (1021020102241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22196089156 + ... + 22196089201.

It is an arithmetic number, because the mean of its divisors is an integer number (266353070148).

Almost surely, 2^{1021020102211} is an apocalyptic number.

1021020102211 is a deficient number, since it is larger than the sum of its proper divisors (44392178381).

1021020102211 is an equidigital number, since it uses as much as digits as its factorization.

1021020102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44392178380.

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

Adding to 1021020102211 its reverse (1122010201201), we get a palindrome (2143030303412).

The spelling of 1021020102211 in words is "one trillion, twenty-one billion, twenty million, one hundred two thousand, two hundred eleven".