10021210221221 has 8 divisors (see below), whose sum is σ = 10503807014400. Its totient is φ = 9542521094832.

The previous prime is 10021210221193. The next prime is 10021210221223. The reversal of 10021210221221 is 12212201212001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10021210221221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10021210221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021210221223) 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, 976911446 + ... + 976921703.

It is an arithmetic number, because the mean of its divisors is an integer number (1312975876800).

Almost surely, 2^{10021210221221} is an apocalyptic number.

It is an amenable number.

10021210221221 is a deficient number, since it is larger than the sum of its proper divisors (482596793179).

10021210221221 is a wasteful number, since it uses less digits than its factorization.

10021210221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953833395.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10021210221221 its reverse (12212201212001), we get a palindrome (22233411433222).

The spelling of 10021210221221 in words is "ten trillion, twenty-one billion, two hundred ten million, two hundred twenty-one thousand, two hundred twenty-one".