21112011301 has 4 divisors (see below), whose sum is σ = 21602988352. Its totient is φ = 20621034252.

The previous prime is 21112011287. The next prime is 21112011317. The reversal of 21112011301 is 10311021112.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21112011301 - 2⁹ = 21112010789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112011331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245488461 + ... + 245488546.

It is an arithmetic number, because the mean of its divisors is an integer number (5400747088).

Almost surely, 2^21112011301 is an apocalyptic number.

It is an amenable number.

21112011301 is a deficient number, since it is larger than the sum of its proper divisors (490977051).

21112011301 is an equidigital number, since it uses as much as digits as its factorization.

21112011301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490977050.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 21112011301 its reverse (10311021112), we get a palindrome (31423032413).

The spelling of 21112011301 in words is "twenty-one billion, one hundred twelve million, eleven thousand, three hundred one".