21201222152001 has 8 divisors (see below), whose sum is σ = 28747419867360. Its totient is φ = 13894586268992.

The previous prime is 21201222151933. The next prime is 21201222152039. The reversal of 21201222152001 is 10025122210212.

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 21201222152001 - 2⁹ = 21201222151489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21201222152051) 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 7 ways as a sum of consecutive naturals, for example, 59890457880 + ... + 59890458233.

It is an arithmetic number, because the mean of its divisors is an integer number (3593427483420).

Almost surely, 2^{21201222152001} is an apocalyptic number.

It is an amenable number.

21201222152001 is a deficient number, since it is larger than the sum of its proper divisors (7546197715359).

21201222152001 is a wasteful number, since it uses less digits than its factorization.

21201222152001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119780916175.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 21201222152001 its reverse (10025122210212), we get a palindrome (31226344362213).

The spelling of 21201222152001 in words is "twenty-one trillion, two hundred one billion, two hundred twenty-two million, one hundred fifty-two thousand, one".