220101122011 has 4 divisors (see below), whose sum is σ = 221207158000. Its totient is φ = 218995086024.

The previous prime is 220101121993. The next prime is 220101122029. The reversal of 220101122011 is 110221101022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110221101022 = 2 ⋅55110550511.

It is an interprime number because it is at equal distance from previous prime (220101121993) and next prime (220101122029).

It is a cyclic number.

It is not a de Polignac number, because 220101122011 - 2²³ = 220092733403 is a prime.

It is a super-2 number, since 2×220101122011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220101121982 and 220101122000.

It is not an unprimeable number, because it can be changed into a prime (220101122611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553017696 + ... + 553018093.

It is an arithmetic number, because the mean of its divisors is an integer number (55301789500).

Almost surely, 2^220101122011 is an apocalyptic number.

220101122011 is a deficient number, since it is larger than the sum of its proper divisors (1106035989).

220101122011 is a wasteful number, since it uses less digits than its factorization.

220101122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106035988.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 220101122011 its reverse (110221101022), we get a palindrome (330322223033).

The spelling of 220101122011 in words is "two hundred twenty billion, one hundred one million, one hundred twenty-two thousand, eleven".