1121021020211 has 4 divisors (see below), whose sum is σ = 1169761064592. Its totient is φ = 1072280975832.

The previous prime is 1121021020181. The next prime is 1121021020241. The reversal of 1121021020211 is 1120201201211.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1121021020181) and next prime (1121021020241).

It is a cyclic number.

It is not a de Polignac number, because 1121021020211 - 2¹⁴ = 1121021003827 is a prime.

It is a super-2 number, since 2×1121021020211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121021020241) 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, 24370022156 + ... + 24370022201.

It is an arithmetic number, because the mean of its divisors is an integer number (292440266148).

Almost surely, 2^{1121021020211} is an apocalyptic number.

1121021020211 is a deficient number, since it is larger than the sum of its proper divisors (48740044381).

1121021020211 is an equidigital number, since it uses as much as digits as its factorization.

1121021020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48740044380.

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

Adding to 1121021020211 its reverse (1120201201211), we get a palindrome (2241222221422).

The spelling of 1121021020211 in words is "one trillion, one hundred twenty-one billion, twenty-one million, twenty thousand, two hundred eleven".