22520121001 has 16 divisors (see below), whose sum is σ = 26007224320. Its totient is φ = 19101413520.

The previous prime is 22520120999. The next prime is 22520121011. The reversal of 22520121001 is 10012102522.

It is a happy number.

It is not a de Polignac number, because 22520121001 - 2¹ = 22520120999 is a prime.

It is a super-3 number, since 3×22520121001³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22520121011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261016 + ... + 336406.

It is an arithmetic number, because the mean of its divisors is an integer number (1625451520).

Almost surely, 2^22520121001 is an apocalyptic number.

It is an amenable number.

22520121001 is a deficient number, since it is larger than the sum of its proper divisors (3487103319).

22520121001 is a wasteful number, since it uses less digits than its factorization.

22520121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75844.

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 22520121001 its reverse (10012102522), we get a palindrome (32532223523).

The spelling of 22520121001 in words is "twenty-two billion, five hundred twenty million, one hundred twenty-one thousand, one".