1011101121211 has 4 divisors (see below), whose sum is σ = 1032613911072. Its totient is φ = 989588331352.

The previous prime is 1011101121143. The next prime is 1011101121241. The reversal of 1011101121211 is 1121211011101.

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 1011101121211 - 2⁹ = 1011101120699 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011101121191 and 1011101121200.

It is not an unprimeable number, because it can be changed into a prime (1011101121241) 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, 10756394860 + ... + 10756394953.

It is an arithmetic number, because the mean of its divisors is an integer number (258153477768).

Almost surely, 2^{1011101121211} is an apocalyptic number.

1011101121211 is a deficient number, since it is larger than the sum of its proper divisors (21512789861).

1011101121211 is an equidigital number, since it uses as much as digits as its factorization.

1011101121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21512789860.

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

Adding to 1011101121211 its reverse (1121211011101), we get a palindrome (2132312132312).

The spelling of 1011101121211 in words is "one trillion, eleven billion, one hundred one million, one hundred twenty-one thousand, two hundred eleven".