220011220001 has 4 divisors (see below), whose sum is σ = 220071155904. Its totient is φ = 219951284100.

The previous prime is 220011219983. The next prime is 220011220003. The reversal of 220011220001 is 100022110022.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100022110022 = 2 ⋅50011055011.

It is a cyclic number.

It is not a de Polignac number, because 220011220001 - 2³⁴ = 202831350817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220011220003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29962445 + ... + 29969786.

It is an arithmetic number, because the mean of its divisors is an integer number (55017788976).

Almost surely, 2^220011220001 is an apocalyptic number.

It is an amenable number.

220011220001 is a deficient number, since it is larger than the sum of its proper divisors (59935903).

220011220001 is an equidigital number, since it uses as much as digits as its factorization.

220011220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59935902.

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

Adding to 220011220001 its reverse (100022110022), we get a palindrome (320033330023).

The spelling of 220011220001 in words is "two hundred twenty billion, eleven million, two hundred twenty thousand, one".