201210011120021 has 8 divisors (see below), whose sum is σ = 203466431645400. Its totient is φ = 198958771814400.

The previous prime is 201210011119981. The next prime is 201210011120033. The reversal of 201210011120021 is 120021110012102.

It can be written as a sum of positive squares in 4 ways, for example, as 80272461060100 + 120937550059921 = 8959490^2 + 10997161^2 .

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 201210011120021 - 2²² = 201210006925717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201210011119978 and 201210011120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210011150021) 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, 1295226836 + ... + 1295382173.

It is an arithmetic number, because the mean of its divisors is an integer number (25433303955675).

Almost surely, 2^{201210011120021} is an apocalyptic number.

It is an amenable number.

201210011120021 is a deficient number, since it is larger than the sum of its proper divisors (2256420525379).

201210011120021 is a wasteful number, since it uses less digits than its factorization.

201210011120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590609879.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201210011120021 its reverse (120021110012102), we get a palindrome (321231121132123).

The spelling of 201210011120021 in words is "two hundred one trillion, two hundred ten billion, eleven million, one hundred twenty thousand, twenty-one".