21211320130011 has 48 divisors (see below), whose sum is σ = 33504623198592. Its totient is φ = 12824322278400.

The previous prime is 21211320129889. The next prime is 21211320130081. The reversal of 21211320130011 is 11003102311212.

21211320130011 is a `hidden beast` number, since 2 + 1 + 211 + 320 + 130 + 0 + 1 + 1 = 666.

It is not a de Polignac number, because 21211320130011 - 2⁹ = 21211320129499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21211320130081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 104021691 + ... + 104225403.

It is an arithmetic number, because the mean of its divisors is an integer number (698012983304).

Almost surely, 2^{21211320130011} is an apocalyptic number.

21211320130011 is a deficient number, since it is larger than the sum of its proper divisors (12293303068581).

21211320130011 is a wasteful number, since it uses less digits than its factorization.

21211320130011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206264 (or 206261 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 21211320130011 its reverse (11003102311212), we get a palindrome (32214422441223).

The spelling of 21211320130011 in words is "twenty-one trillion, two hundred eleven billion, three hundred twenty million, one hundred thirty thousand, eleven".