10221321210121 has 4 divisors (see below), whose sum is σ = 11681509954432. Its totient is φ = 8761132465812.

The previous prime is 10221321210109. The next prime is 10221321210131. The reversal of 10221321210121 is 12101212312201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10221321210121 - 2⁷ = 10221321209993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10221321210131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 730094372145 + ... + 730094372158.

It is an arithmetic number, because the mean of its divisors is an integer number (2920377488608).

Almost surely, 2^{10221321210121} is an apocalyptic number.

It is an amenable number.

10221321210121 is a deficient number, since it is larger than the sum of its proper divisors (1460188744311).

10221321210121 is an equidigital number, since it uses as much as digits as its factorization.

10221321210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460188744310.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 10221321210121 its reverse (12101212312201), we get a palindrome (22322533522322).

The spelling of 10221321210121 in words is "ten trillion, two hundred twenty-one billion, three hundred twenty-one million, two hundred ten thousand, one hundred twenty-one".