202121010011 has 8 divisors (see below), whose sum is σ = 208652043264. Its totient is φ = 195590664360.

The previous prime is 202121010001. The next prime is 202121010017. The reversal of 202121010011 is 110010121202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202121010011 - 2⁶ = 202121009947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202121009974 and 202121010001.

It is not an unprimeable number, because it can be changed into a prime (202121010017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462746 + ... + 786368.

It is an arithmetic number, because the mean of its divisors is an integer number (26081505408).

Almost surely, 2^202121010011 is an apocalyptic number.

202121010011 is a deficient number, since it is larger than the sum of its proper divisors (6531033253).

202121010011 is a wasteful number, since it uses less digits than its factorization.

202121010011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343801.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 202121010011 its reverse (110010121202), we get a palindrome (312131131213).

The spelling of 202121010011 in words is "two hundred two billion, one hundred twenty-one million, ten thousand, eleven".