221002020220001 has 4 divisors (see below), whose sum is σ = 221002067219712. Its totient is φ = 221001973220292.

The previous prime is 221002020219943. The next prime is 221002020220019. The reversal of 221002020220001 is 100022020200122.

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 221002020220001 - 2¹⁴ = 221002020203617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221002020220901) 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, 15550121 + ... + 26149766.

It is an arithmetic number, because the mean of its divisors is an integer number (55250516804928).

Almost surely, 2^{221002020220001} is an apocalyptic number.

It is an amenable number.

221002020220001 is a deficient number, since it is larger than the sum of its proper divisors (46999711).

221002020220001 is an equidigital number, since it uses as much as digits as its factorization.

221002020220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46999710.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 221002020220001 its reverse (100022020200122), we get a palindrome (321024040420123).

The spelling of 221002020220001 in words is "two hundred twenty-one trillion, two billion, twenty million, two hundred twenty thousand, one".