10201221021 has 8 divisors (see below), whose sum is σ = 13603099104. Its totient is φ = 6800078480.

The previous prime is 10201221013. The next prime is 10201221053. The reversal of 10201221021 is 12012210201.

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 10201221021 - 2³ = 10201221013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10201220988 and 10201221006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201221001) 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, 150666 + ... + 207611.

It is an arithmetic number, because the mean of its divisors is an integer number (1700387388).

Almost surely, 2^10201221021 is an apocalyptic number.

It is an amenable number.

10201221021 is a deficient number, since it is larger than the sum of its proper divisors (3401878083).

10201221021 is an equidigital number, since it uses as much as digits as its factorization.

10201221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367771.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10201221021 its reverse (12012210201), we get a palindrome (22213431222).

The spelling of 10201221021 in words is "ten billion, two hundred one million, two hundred twenty-one thousand, twenty-one".