221122202001 has 16 divisors (see below), whose sum is σ = 312598456704. Its totient is φ = 138554037504.

The previous prime is 221122201987. The next prime is 221122202039. The reversal of 221122202001 is 100202221122.

It is not a de Polignac number, because 221122202001 - 2¹⁰ = 221122200977 is a prime.

It is a super-3 number, since 3×221122202001³ (a number of 35 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221122200001) 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, 2920141 + ... + 2994906.

It is an arithmetic number, because the mean of its divisors is an integer number (19537403544).

Almost surely, 2^221122202001 is an apocalyptic number.

It is an amenable number.

221122202001 is a deficient number, since it is larger than the sum of its proper divisors (91476254703).

221122202001 is a wasteful number, since it uses less digits than its factorization.

221122202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5915800.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221122202001 its reverse (100202221122), we get a palindrome (321324423123).

The spelling of 221122202001 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred two thousand, one".