201012221020021 has 8 divisors (see below), whose sum is σ = 201162521271744. Its totient is φ = 200861975184000.

The previous prime is 201012221020003. The next prime is 201012221020087. The reversal of 201012221020021 is 120020122210102.

It is a happy number.

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 201012221020021 - 2⁷ = 201012221019893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201012221019977 and 201012221020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201012221020921) 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, 6211641 + ... + 20990686.

It is an arithmetic number, because the mean of its divisors is an integer number (25145315158968).

Almost surely, 2^{201012221020021} is an apocalyptic number.

It is an amenable number.

201012221020021 is a deficient number, since it is larger than the sum of its proper divisors (150300251723).

201012221020021 is a wasteful number, since it uses less digits than its factorization.

201012221020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27207851.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201012221020021 its reverse (120020122210102), we get a palindrome (321032343230123).

The spelling of 201012221020021 in words is "two hundred one trillion, twelve billion, two hundred twenty-one million, twenty thousand, twenty-one".