221220120100011 has 8 divisors (see below), whose sum is σ = 294998722088400. Its totient is φ = 147460799089152.

The previous prime is 221220120099929. The next prime is 221220120100013. The reversal of 221220120100011 is 110001021022122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221220120100011 - 2¹⁰ = 221220120098987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221220120100013) 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, 4820217610 + ... + 4820263503.

It is an arithmetic number, because the mean of its divisors is an integer number (36874840261050).

Almost surely, 2^{221220120100011} is an apocalyptic number.

221220120100011 is a deficient number, since it is larger than the sum of its proper divisors (73778601988389).

221220120100011 is an equidigital number, since it uses as much as digits as its factorization.

221220120100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9640488765.

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

Adding to 221220120100011 its reverse (110001021022122), we get a palindrome (331221141122133).

The spelling of 221220120100011 in words is "two hundred twenty-one trillion, two hundred twenty billion, one hundred twenty million, one hundred thousand, eleven".