21230512552011 has 8 divisors (see below), whose sum is σ = 32351257222144. Its totient is φ = 12131721458280.

The previous prime is 21230512551929. The next prime is 21230512552033. The reversal of 21230512552011 is 11025521503212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21230512552011 - 2⁷ = 21230512551883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21230512552011.

It is not an unprimeable number, because it can be changed into a prime (21230512552411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505488394075 + ... + 505488394116.

It is an arithmetic number, because the mean of its divisors is an integer number (4043907152768).

Almost surely, 2^{21230512552011} is an apocalyptic number.

21230512552011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21230512552011 is a deficient number, since it is larger than the sum of its proper divisors (11120744670133).

21230512552011 is a wasteful number, since it uses less digits than its factorization.

21230512552011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010976788201.

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 21230512552011 in words is "twenty-one trillion, two hundred thirty billion, five hundred twelve million, five hundred fifty-two thousand, eleven".