1021224221201 has 4 divisors (see below), whose sum is σ = 1024167230832. Its totient is φ = 1018281211572.

The previous prime is 1021224221191. The next prime is 1021224221233.

It is a happy number.

1021224221201 is nontrivially palindromic in base 10.

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 a de Polignac number, because none of the positive numbers 2^k-1021224221201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021224421201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1471504295 + ... + 1471504988.

It is an arithmetic number, because the mean of its divisors is an integer number (256041807708).

Almost surely, 2^{1021224221201} is an apocalyptic number.

It is an amenable number.

1021224221201 is a deficient number, since it is larger than the sum of its proper divisors (2943009631).

1021224221201 is an equidigital number, since it uses as much as digits as its factorization.

1021224221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2943009630.

The product of its (nonzero) digits is 256, while the sum is 20.

The spelling of 1021224221201 in words is "one trillion, twenty-one billion, two hundred twenty-four million, two hundred twenty-one thousand, two hundred one".