10010021221221 has 16 divisors (see below), whose sum is σ = 15280079113728. Its totient is φ = 5709994585200.

The previous prime is 10010021221169. The next prime is 10010021221243. The reversal of 10010021221221 is 12212212001001.

It is not a de Polignac number, because 10010021221221 - 2⁶ = 10010021221157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10010021221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010021221271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 417385275 + ... + 417409256.

It is an arithmetic number, because the mean of its divisors is an integer number (955004944608).

Almost surely, 2^{10010021221221} is an apocalyptic number.

It is an amenable number.

10010021221221 is a deficient number, since it is larger than the sum of its proper divisors (5270057892507).

10010021221221 is an equidigital number, since it uses as much as digits as its factorization.

10010021221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834795112.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 10010021221221 its reverse (12212212001001), we get a palindrome (22222233222222).

The spelling of 10010021221221 in words is "ten trillion, ten billion, twenty-one million, two hundred twenty-one thousand, two hundred twenty-one".