1011022120111 has 4 divisors (see below), whose sum is σ = 1011208695400. Its totient is φ = 1010835544824.

The previous prime is 1011022120103. The next prime is 1011022120177. The reversal of 1011022120111 is 1110212201101.

It is a happy number.

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 1011022120111 - 2³ = 1011022120103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011022120091 and 1011022120100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011022120711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93279516 + ... + 93290353.

It is an arithmetic number, because the mean of its divisors is an integer number (252802173850).

Almost surely, 2^{1011022120111} is an apocalyptic number.

1011022120111 is a deficient number, since it is larger than the sum of its proper divisors (186575289).

1011022120111 is an equidigital number, since it uses as much as digits as its factorization.

1011022120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186575288.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1011022120111 its reverse (1110212201101), we get a palindrome (2121234321212).

The spelling of 1011022120111 in words is "one trillion, eleven billion, twenty-two million, one hundred twenty thousand, one hundred eleven".