11031210320021 has 4 divisors (see below), whose sum is σ = 11031236339232. Its totient is φ = 11031184300812.

The previous prime is 11031210320003. The next prime is 11031210320029. The reversal of 11031210320021 is 12002301213011.

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 11031210320021 - 2⁴² = 6633163808917 is a prime.

It is a super-2 number, since 2×11031210320021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031210320029) 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, 12362945 + ... + 13225158.

It is an arithmetic number, because the mean of its divisors is an integer number (2757809084808).

Almost surely, 2^{11031210320021} is an apocalyptic number.

It is an amenable number.

11031210320021 is a deficient number, since it is larger than the sum of its proper divisors (26019211).

11031210320021 is an equidigital number, since it uses as much as digits as its factorization.

11031210320021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26019210.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11031210320021 its reverse (12002301213011), we get a palindrome (23033511533032).

The spelling of 11031210320021 in words is "eleven trillion, thirty-one billion, two hundred ten million, three hundred twenty thousand, twenty-one".