22121212012001 has 8 divisors (see below), whose sum is σ = 22559328105984. Its totient is φ = 21683863871280.

The previous prime is 22121212011991. The next prime is 22121212012013. The reversal of 22121212012001 is 10021021212122.

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 22121212012001 - 2¹⁰ = 22121212010977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121212032001) 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, 191930135 + ... + 192045356.

It is an arithmetic number, because the mean of its divisors is an integer number (2819916013248).

Almost surely, 2^{22121212012001} is an apocalyptic number.

It is an amenable number.

22121212012001 is a deficient number, since it is larger than the sum of its proper divisors (438116093983).

22121212012001 is a wasteful number, since it uses less digits than its factorization.

22121212012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383976631.

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

Adding to 22121212012001 its reverse (10021021212122), we get a palindrome (32142233224123).

The spelling of 22121212012001 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twelve million, twelve thousand, one".