202121101001 has 8 divisors (see below), whose sum is σ = 203047565184. Its totient is φ = 201196755760.

The previous prime is 202121100997. The next prime is 202121101019. The reversal of 202121101001 is 100101121202.

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 202121101001 - 2² = 202121100997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202121101081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338366 + ... + 720231.

It is an arithmetic number, because the mean of its divisors is an integer number (25380945648).

Almost surely, 2^202121101001 is an apocalyptic number.

It is an amenable number.

202121101001 is a deficient number, since it is larger than the sum of its proper divisors (926464183).

202121101001 is a wasteful number, since it uses less digits than its factorization.

202121101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059471.

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

Adding to 202121101001 its reverse (100101121202), we get a palindrome (302222222203).

The spelling of 202121101001 in words is "two hundred two billion, one hundred twenty-one million, one hundred one thousand, one".