10221221001021 has 16 divisors (see below), whose sum is σ = 13670098358400. Its totient is φ = 6793270937600.

The previous prime is 10221221000989. The next prime is 10221221001071. The reversal of 10221221001021 is 12010012212201.

It is a cyclic number.

It is not a de Polignac number, because 10221221001021 - 2⁵ = 10221221000989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221221001071) 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, 1573305 + ... + 4787246.

It is an arithmetic number, because the mean of its divisors is an integer number (854381147400).

Almost surely, 2^{10221221001021} is an apocalyptic number.

It is an amenable number.

10221221001021 is a deficient number, since it is larger than the sum of its proper divisors (3448877357379).

10221221001021 is a wasteful number, since it uses less digits than its factorization.

10221221001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6362196.

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

Adding to 10221221001021 its reverse (12010012212201), we get a palindrome (22231233213222).

The spelling of 10221221001021 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty-one million, one thousand, twenty-one".