1022021021011 has 4 divisors (see below), whose sum is σ = 1022265703432. Its totient is φ = 1021776338592.

The previous prime is 1022021020927. The next prime is 1022021021053. The reversal of 1022021021011 is 1101201202201.

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 1022021021011 - 2⁷ = 1022021020883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022021020982 and 1022021021000.

It is not an unprimeable number, because it can be changed into a prime (1022021021711) 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, 122334945 + ... + 122343298.

It is an arithmetic number, because the mean of its divisors is an integer number (255566425858).

Almost surely, 2^{1022021021011} is an apocalyptic number.

1022021021011 is a deficient number, since it is larger than the sum of its proper divisors (244682421).

1022021021011 is an equidigital number, since it uses as much as digits as its factorization.

1022021021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244682420.

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

Adding to 1022021021011 its reverse (1101201202201), we get a palindrome (2123222223212).

The spelling of 1022021021011 in words is "one trillion, twenty-two billion, twenty-one million, twenty-one thousand, eleven".