210020020011001 has 8 divisors (see below), whose sum is σ = 210229860380904. Its totient is φ = 209810240839680.

The previous prime is 210020020010959. The next prime is 210020020011007. The reversal of 210020020011001 is 100110020020012.

It can be written as a sum of positive squares in 4 ways, for example, as 111676304425401 + 98343715585600 = 10567701^2 + 9916840^2 .

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 210020020011001 - 2²⁷ = 210019885793273 is a prime.

It is a super-2 number, since 2×210020020011001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210020020011007) 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, 8431120 + ... + 22161313.

It is an arithmetic number, because the mean of its divisors is an integer number (26278732547613).

Almost surely, 2^{210020020011001} is an apocalyptic number.

It is an amenable number.

210020020011001 is a deficient number, since it is larger than the sum of its proper divisors (209840369903).

210020020011001 is a wasteful number, since it uses less digits than its factorization.

210020020011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30599291.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 210020020011001 its reverse (100110020020012), we get a palindrome (310130040031013).

The spelling of 210020020011001 in words is "two hundred ten trillion, twenty billion, twenty million, eleven thousand, one".