211221000201001 has 8 divisors (see below), whose sum is σ = 241396184813760. Its totient is φ = 181046004591408.

The previous prime is 211221000200983. The next prime is 211221000201073. The reversal of 211221000201001 is 100102000122112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211221000201001 is a prime.

It is a super-2 number, since 2×211221000201001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211221000201091) 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, 44847886 + ... + 49333303.

It is an arithmetic number, because the mean of its divisors is an integer number (30174523101720).

Almost surely, 2^{211221000201001} is an apocalyptic number.

It is an amenable number.

211221000201001 is a deficient number, since it is larger than the sum of its proper divisors (30175184612759).

211221000201001 is an equidigital number, since it uses as much as digits as its factorization.

211221000201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94501583.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211221000201001 its reverse (100102000122112), we get a palindrome (311323000323113).

The spelling of 211221000201001 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred one thousand, one".