201332111201021 has 4 divisors (see below), whose sum is σ = 207826695433344. Its totient is φ = 194837526968700.

The previous prime is 201332111200967. The next prime is 201332111201063. The reversal of 201332111201021 is 120102111233102.

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 201332111201021 - 2¹⁸ = 201332110938877 is a prime.

It is a super-2 number, since 2×201332111201021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201332111200984 and 201332111201002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201332111203021) 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, 3247292116115 + ... + 3247292116176.

It is an arithmetic number, because the mean of its divisors is an integer number (51956673858336).

Almost surely, 2^{201332111201021} is an apocalyptic number.

It is an amenable number.

201332111201021 is a deficient number, since it is larger than the sum of its proper divisors (6494584232323).

201332111201021 is an equidigital number, since it uses as much as digits as its factorization.

201332111201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6494584232322.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 201332111201021 its reverse (120102111233102), we get a palindrome (321434222434123).

The spelling of 201332111201021 in words is "two hundred one trillion, three hundred thirty-two billion, one hundred eleven million, two hundred one thousand, twenty-one".