21111132012301 has 4 divisors (see below), whose sum is σ = 21112386926112. Its totient is φ = 21109877098492.

The previous prime is 21111132012277. The next prime is 21111132012307. The reversal of 21111132012301 is 10321023111112.

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 a de Polignac number, because none of the positive numbers 2^k-21111132012301 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 (21111132012307) 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, 627431671 + ... + 627465316.

It is an arithmetic number, because the mean of its divisors is an integer number (5278096731528).

Almost surely, 2^{21111132012301} is an apocalyptic number.

It is an amenable number.

21111132012301 is a deficient number, since it is larger than the sum of its proper divisors (1254913811).

21111132012301 is a wasteful number, since it uses less digits than its factorization.

21111132012301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254913810.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 21111132012301 its reverse (10321023111112), we get a palindrome (31432155123413).

The spelling of 21111132012301 in words is "twenty-one trillion, one hundred eleven billion, one hundred thirty-two million, twelve thousand, three hundred one".