2221021210001 has 8 divisors (see below), whose sum is σ = 2423034237600. Its totient is φ = 2019025183840.

The previous prime is 2221021209971. The next prime is 2221021210003. The reversal of 2221021210001 is 1000121201222.

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 2221021210001 - 2¹⁸ = 2221020947857 is a prime.

It is a super-2 number, since 2×2221021210001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221021210003) 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, 3976436 + ... + 4500453.

It is an arithmetic number, because the mean of its divisors is an integer number (302879279700).

Almost surely, 2^{2221021210001} is an apocalyptic number.

It is an amenable number.

2221021210001 is a deficient number, since it is larger than the sum of its proper divisors (202013027599).

2221021210001 is a wasteful number, since it uses less digits than its factorization.

2221021210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8500719.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2221021210001 its reverse (1000121201222), we get a palindrome (3221142411223).

The spelling of 2221021210001 in words is "two trillion, two hundred twenty-one billion, twenty-one million, two hundred ten thousand, one".