10021120111211 has 4 divisors (see below), whose sum is σ = 10932131030424. Its totient is φ = 9110109192000.

The previous prime is 10021120111207. The next prime is 10021120111241. The reversal of 10021120111211 is 11211102112001.

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 10021120111211 - 2² = 10021120111207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10021120111241) 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, 455505459590 + ... + 455505459611.

It is an arithmetic number, because the mean of its divisors is an integer number (2733032757606).

Almost surely, 2^{10021120111211} is an apocalyptic number.

10021120111211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10021120111211 is a deficient number, since it is larger than the sum of its proper divisors (911010919213).

10021120111211 is an equidigital number, since it uses as much as digits as its factorization.

10021120111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911010919212.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 10021120111211 its reverse (11211102112001), we get a palindrome (21232222223212).

The spelling of 10021120111211 in words is "ten trillion, twenty-one billion, one hundred twenty million, one hundred eleven thousand, two hundred eleven".