1022020211111 has 4 divisors (see below), whose sum is σ = 1031064637872. Its totient is φ = 1012975784352.

The previous prime is 1022020211089. The next prime is 1022020211137. The reversal of 1022020211111 is 1111120202201.

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 1022020211111 - 2²² = 1022016016807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022020211171) 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, 4522213211 + ... + 4522213436.

It is an arithmetic number, because the mean of its divisors is an integer number (257766159468).

Almost surely, 2^{1022020211111} is an apocalyptic number.

1022020211111 is a deficient number, since it is larger than the sum of its proper divisors (9044426761).

1022020211111 is an equidigital number, since it uses as much as digits as its factorization.

1022020211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9044426760.

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

Adding to 1022020211111 its reverse (1111120202201), we get a palindrome (2133140413312).

The spelling of 1022020211111 in words is "one trillion, twenty-two billion, twenty million, two hundred eleven thousand, one hundred eleven".