220210021001 has 2 divisors, whose sum is σ = 220210021002. Its totient is φ = 220210021000.

The previous prime is 220210020929. The next prime is 220210021061. The reversal of 220210021001 is 100120012022.

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., 131441777401 + 88768243600 = 362549^2 + 297940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220210021001 is a prime.

It is a super-2 number, since 2×220210021001² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220210021061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110105010500 + 110105010501.

It is an arithmetic number, because the mean of its divisors is an integer number (110105010501).

Almost surely, 2^220210021001 is an apocalyptic number.

It is an amenable number.

220210021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

220210021001 is an equidigital number, since it uses as much as digits as its factorization.

220210021001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220210021001 its reverse (100120012022), we get a palindrome (320330033023).

The spelling of 220210021001 in words is "two hundred twenty billion, two hundred ten million, twenty-one thousand, one".