221210014001 has 2 divisors, whose sum is σ = 221210014002. Its totient is φ = 221210014000.

The previous prime is 221210013967. The next prime is 221210014007. The reversal of 221210014001 is 100410012122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138164607025 + 83045406976 = 371705^2 + 288176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221210014001 is a prime.

It is a super-4 number, since 4×221210014001⁴ (a number of 46 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (221210014007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605007000 + 110605007001.

It is an arithmetic number, because the mean of its divisors is an integer number (110605007001).

Almost surely, 2^221210014001 is an apocalyptic number.

It is an amenable number.

221210014001 is a deficient number, since it is larger than the sum of its proper divisors (1).

221210014001 is an equidigital number, since it uses as much as digits as its factorization.

221210014001 is an evil number, because the sum of its binary digits is even.

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

Adding to 221210014001 its reverse (100410012122), we get a palindrome (321620026123).

The spelling of 221210014001 in words is "two hundred twenty-one billion, two hundred ten million, fourteen thousand, one".