21112012011201 has 8 divisors (see below), whose sum is σ = 28407600260160. Its totient is φ = 13945549218192.

The previous prime is 21112012011107. The next prime is 21112012011229. The reversal of 21112012011201 is 10211021021112.

It is a happy number.

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

It is not a de Polignac number, because 21112012011201 - 2⁷ = 21112012011073 is a prime.

It is a super-2 number, since 2×21112012011201² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21112012011241) 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, 32281363605 + ... + 32281364258.

It is an arithmetic number, because the mean of its divisors is an integer number (3550950032520).

Almost surely, 2^{21112012011201} is an apocalyptic number.

It is an amenable number.

21112012011201 is a deficient number, since it is larger than the sum of its proper divisors (7295588248959).

21112012011201 is a wasteful number, since it uses less digits than its factorization.

21112012011201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64562727975.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21112012011201 its reverse (10211021021112), we get a palindrome (31323033032313).

The spelling of 21112012011201 in words is "twenty-one trillion, one hundred twelve billion, twelve million, eleven thousand, two hundred one".