22012131001 has 4 divisors (see below), whose sum is σ = 25156721152. Its totient is φ = 18867540852.

The previous prime is 22012130999. The next prime is 22012131007. The reversal of 22012131001 is 10013121022.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10013121022 = 2 ⋅5006560511.

It is a cyclic number.

It is not a de Polignac number, because 22012131001 - 2¹ = 22012130999 is a prime.

It is a super-4 number, since 4×22012131001⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012131007) 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, 1572295065 + ... + 1572295078.

It is an arithmetic number, because the mean of its divisors is an integer number (6289180288).

Almost surely, 2^22012131001 is an apocalyptic number.

It is an amenable number.

22012131001 is a deficient number, since it is larger than the sum of its proper divisors (3144590151).

22012131001 is an equidigital number, since it uses as much as digits as its factorization.

22012131001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3144590150.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 22012131001 its reverse (10013121022), we get a palindrome (32025252023).

The spelling of 22012131001 in words is "twenty-two billion, twelve million, one hundred thirty-one thousand, one".