201202021112021 has 4 divisors (see below), whose sum is σ = 205881137882112. Its totient is φ = 196522904341932.

The previous prime is 201202021111991. The next prime is 201202021112077. The reversal of 201202021112021 is 120211120202102.

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 a de Polignac number, because none of the positive numbers 2^k-201202021112021 is a prime.

It is a super-3 number, since 3×201202021112021³ (a number of 44 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 (201202021112921) 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, 2339558384981 + ... + 2339558385066.

It is an arithmetic number, because the mean of its divisors is an integer number (51470284470528).

Almost surely, 2^{201202021112021} is an apocalyptic number.

It is an amenable number.

201202021112021 is a deficient number, since it is larger than the sum of its proper divisors (4679116770091).

201202021112021 is an equidigital number, since it uses as much as digits as its factorization.

201202021112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4679116770090.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201202021112021 its reverse (120211120202102), we get a palindrome (321413141314123).

The spelling of 201202021112021 in words is "two hundred one trillion, two hundred two billion, twenty-one million, one hundred twelve thousand, twenty-one".