22121210001 has 8 divisors (see below), whose sum is σ = 32176305504. Its totient is φ = 13406793920.

The previous prime is 22121209961. The next prime is 22121210011. The reversal of 22121210001 is 10001212122.

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 22121210001 - 2⁶ = 22121209937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22121210011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335169816 + ... + 335169881.

It is an arithmetic number, because the mean of its divisors is an integer number (4022038188).

Almost surely, 2^22121210001 is an apocalyptic number.

It is an amenable number.

22121210001 is a deficient number, since it is larger than the sum of its proper divisors (10055095503).

22121210001 is a wasteful number, since it uses less digits than its factorization.

22121210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670339711.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22121210001 its reverse (10001212122), we get a palindrome (32122422123).

The spelling of 22121210001 in words is "twenty-two billion, one hundred twenty-one million, two hundred ten thousand, one".