22012121221001 has 8 divisors (see below), whose sum is σ = 22530294583680. Its totient is φ = 21499802924832.

The previous prime is 22012121220959. The next prime is 22012121221009. The reversal of 22012121221001 is 10012212121022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22012121221001 - 2³⁸ = 21737243314057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012121221009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1463759021 + ... + 1463774058.

It is an arithmetic number, because the mean of its divisors is an integer number (2816286822960).

Almost surely, 2^{22012121221001} is an apocalyptic number.

It is an amenable number.

22012121221001 is a deficient number, since it is larger than the sum of its proper divisors (518173362679).

22012121221001 is a wasteful number, since it uses less digits than its factorization.

22012121221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927533255.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22012121221001 its reverse (10012212121022), we get a palindrome (32024333342023).

The spelling of 22012121221001 in words is "twenty-two trillion, twelve billion, one hundred twenty-one million, two hundred twenty-one thousand, one".