211220110022001 has 16 divisors (see below), whose sum is σ = 288254732796096. Its totient is φ = 137501230116096.

The previous prime is 211220110021979. The next prime is 211220110022039. The reversal of 211220110022001 is 100220011022112.

It is not a de Polignac number, because 211220110022001 - 2¹⁵ = 211220109989233 is a prime.

It is a super-2 number, since 2×211220110022001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211220110022101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222418260 + ... + 223365893.

It is an arithmetic number, because the mean of its divisors is an integer number (18015920799756).

Almost surely, 2^{211220110022001} is an apocalyptic number.

It is an amenable number.

211220110022001 is a deficient number, since it is larger than the sum of its proper divisors (77034622774095).

211220110022001 is a wasteful number, since it uses less digits than its factorization.

211220110022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445787872.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211220110022001 its reverse (100220011022112), we get a palindrome (311440121044113).

The spelling of 211220110022001 in words is "two hundred eleven trillion, two hundred twenty billion, one hundred ten million, twenty-two thousand, one".