21120201102011 has 16 divisors (see below), whose sum is σ = 23421018506496. Its totient is φ = 18882933300000.

The previous prime is 21120201101999. The next prime is 21120201102043. The reversal of 21120201102011 is 11020110202112.

It is not a de Polignac number, because 21120201102011 - 2⁶ = 21120201101947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21120201102311) 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, 3020336 + ... + 7166786.

It is an arithmetic number, because the mean of its divisors is an integer number (1463813656656).

Almost surely, 2^{21120201102011} is an apocalyptic number.

21120201102011 is a deficient number, since it is larger than the sum of its proper divisors (2300817404485).

21120201102011 is a wasteful number, since it uses less digits than its factorization.

21120201102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154114.

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

Adding to 21120201102011 its reverse (11020110202112), we get a palindrome (32140311304123).

It can be divided in two parts, 21120201 and 102011, that added together give a palindrome (21222212).

The spelling of 21120201102011 in words is "twenty-one trillion, one hundred twenty billion, two hundred one million, one hundred two thousand, eleven".