1012111011211 has 4 divisors (see below), whose sum is σ = 1035648476632. Its totient is φ = 988573545792.

The previous prime is 1012111011203. The next prime is 1012111011217. The reversal of 1012111011211 is 1121101112101.

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 1012111011211 - 2³ = 1012111011203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012111011191 and 1012111011200.

It is not an unprimeable number, because it can be changed into a prime (1012111011217) 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, 11768732646 + ... + 11768732731.

It is an arithmetic number, because the mean of its divisors is an integer number (258912119158).

Almost surely, 2^{1012111011211} is an apocalyptic number.

1012111011211 is a deficient number, since it is larger than the sum of its proper divisors (23537465421).

1012111011211 is an equidigital number, since it uses as much as digits as its factorization.

1012111011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23537465420.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1012111011211 its reverse (1121101112101), we get a palindrome (2133212123312).

The spelling of 1012111011211 in words is "one trillion, twelve billion, one hundred eleven million, eleven thousand, two hundred eleven".