1121010020111 has 4 divisors (see below), whose sum is σ = 1121548193112. Its totient is φ = 1120471847112.

The previous prime is 1121010020069. The next prime is 1121010020131. The reversal of 1121010020111 is 1110200101211.

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 1121010020111 - 2²⁶ = 1120942911247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121010020092 and 1121010020101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121010020131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269083376 + ... + 269087541.

It is an arithmetic number, because the mean of its divisors is an integer number (280387048278).

Almost surely, 2^{1121010020111} is an apocalyptic number.

1121010020111 is a deficient number, since it is larger than the sum of its proper divisors (538173001).

1121010020111 is an equidigital number, since it uses as much as digits as its factorization.

1121010020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538173000.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1121010020111 its reverse (1110200101211), we get a palindrome (2231210121322).

The spelling of 1121010020111 in words is "one trillion, one hundred twenty-one billion, ten million, twenty thousand, one hundred eleven".