21032020133111 has 4 divisors (see below), whose sum is σ = 22649867835672. Its totient is φ = 19414172430552.

The previous prime is 21032020133093. The next prime is 21032020133141. The reversal of 21032020133111 is 11133102023012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21032020133111 is a prime.

It is a super-3 number, since 3×21032020133111³ (a number of 41 digits) contains 333 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 (21032020133141) 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, 808923851261 + ... + 808923851286.

It is an arithmetic number, because the mean of its divisors is an integer number (5662466958918).

Almost surely, 2^{21032020133111} is an apocalyptic number.

21032020133111 is a deficient number, since it is larger than the sum of its proper divisors (1617847702561).

21032020133111 is a wasteful number, since it uses less digits than its factorization.

21032020133111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617847702560.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21032020133111 its reverse (11133102023012), we get a palindrome (32165122156123).

The spelling of 21032020133111 in words is "twenty-one trillion, thirty-two billion, twenty million, one hundred thirty-three thousand, one hundred eleven".