21110010031001 has 4 divisors (see below), whose sum is σ = 22027836554112. Its totient is φ = 20192183507892.

The previous prime is 21110010030959. The next prime is 21110010031037. The reversal of 21110010031001 is 10013001001112.

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 21110010031001 - 2¹⁴ = 21110010014617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21110010031501) 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, 458913261521 + ... + 458913261566.

It is an arithmetic number, because the mean of its divisors is an integer number (5506959138528).

Almost surely, 2^{21110010031001} is an apocalyptic number.

It is an amenable number.

21110010031001 is a deficient number, since it is larger than the sum of its proper divisors (917826523111).

21110010031001 is an equidigital number, since it uses as much as digits as its factorization.

21110010031001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917826523110.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 21110010031001 its reverse (10013001001112), we get a palindrome (31123011032113).

The spelling of 21110010031001 in words is "twenty-one trillion, one hundred ten billion, ten million, thirty-one thousand, one".