202221120001 has 4 divisors (see below), whose sum is σ = 209194262100. Its totient is φ = 195247977904.

The previous prime is 202221119981. The next prime is 202221120029. The reversal of 202221120001 is 100021122202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100021122202 = 2 ⋅50010561101.

It can be written as a sum of positive squares in 2 ways, for example, as 97406410000 + 104814710001 = 312100^2 + 323751^2 .

It is a cyclic number.

It is not a de Polignac number, because 202221120001 - 2²⁷ = 202086902273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202221120041) 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, 3486571006 + ... + 3486571063.

It is an arithmetic number, because the mean of its divisors is an integer number (52298565525).

Almost surely, 2^202221120001 is an apocalyptic number.

It is an amenable number.

202221120001 is a deficient number, since it is larger than the sum of its proper divisors (6973142099).

202221120001 is an equidigital number, since it uses as much as digits as its factorization.

202221120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6973142098.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 202221120001 its reverse (100021122202), we get a palindrome (302242242203).

The spelling of 202221120001 in words is "two hundred two billion, two hundred twenty-one million, one hundred twenty thousand, one".