21121114032011 has 16 divisors (see below), whose sum is σ = 24398553789888. Its totient is φ = 17909019648000.

The previous prime is 21121114031959. The next prime is 21121114032079. The reversal of 21121114032011 is 11023041112112.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21121114032011 is a prime.

It is a super-2 number, since 2×21121114032011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21121114031011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12139850 + ... + 13770191.

It is an arithmetic number, because the mean of its divisors is an integer number (1524909611868).

Almost surely, 2^{21121114032011} is an apocalyptic number.

21121114032011 is a deficient number, since it is larger than the sum of its proper divisors (3277439757877).

21121114032011 is a wasteful number, since it uses less digits than its factorization.

21121114032011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25911302.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 21121114032011 its reverse (11023041112112), we get a palindrome (32144155144123).

The spelling of 21121114032011 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred fourteen million, thirty-two thousand, eleven".