2011523332021 has 4 divisors (see below), whose sum is σ = 2298883808032. Its totient is φ = 1724162856012.

The previous prime is 2011523331971. The next prime is 2011523332031. The reversal of 2011523332021 is 1202333251102.

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 2011523332021 - 2⁹ = 2011523331509 is a prime.

It is a super-2 number, since 2×2011523332021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011523332031) 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, 143680237995 + ... + 143680238008.

It is an arithmetic number, because the mean of its divisors is an integer number (574720952008).

Almost surely, 2^{2011523332021} is an apocalyptic number.

It is an amenable number.

2011523332021 is a deficient number, since it is larger than the sum of its proper divisors (287360476011).

2011523332021 is an equidigital number, since it uses as much as digits as its factorization.

2011523332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287360476010.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 2011523332021 its reverse (1202333251102), we get a palindrome (3213856583123).

The spelling of 2011523332021 in words is "two trillion, eleven billion, five hundred twenty-three million, three hundred thirty-two thousand, twenty-one".