22022121021201 has 36 divisors (see below), whose sum is σ = 37004939271300. Its totient is φ = 12583462606848.

The previous prime is 22022121021151. The next prime is 22022121021211. The reversal of 22022121021201 is 10212012122022.

It is a happy number.

22022121021201 is a `hidden beast` number, since 2 + 20 + 221 + 210 + 212 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7088379084801 + 14933741936400 = 2662401^2 + 3864420^2 .

It is not a de Polignac number, because 22022121021201 - 2⁶ = 22022121021137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22022121021211) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8036685 + ... + 10422693.

Almost surely, 2^{22022121021201} is an apocalyptic number.

22022121021201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22022121021201 is a deficient number, since it is larger than the sum of its proper divisors (14982818250099).

22022121021201 is a wasteful number, since it uses less digits than its factorization.

22022121021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406958 (or 2406948 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22022121021201 its reverse (10212012122022), we get a palindrome (32234133143223).

The spelling of 22022121021201 in words is "twenty-two trillion, twenty-two billion, one hundred twenty-one million, twenty-one thousand, two hundred one".