220111001010100 has 18 divisors (see below), whose sum is σ = 477640872192134. Its totient is φ = 88044400404000.

The previous prime is 220111001010077. The next prime is 220111001010113. The reversal of 220111001010100 is 1010100111022.

It can be written as a sum of positive squares in 3 ways, for example, as 40347853184016 + 179763147826084 = 6351996^2 + 13407578^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1100555004951 + ... + 1100555005150.

Almost surely, 2^{220111001010100} is an apocalyptic number.

220111001010100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220111001010100 is an abundant number, since it is smaller than the sum of its proper divisors (257529871182034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220111001010100 is a wasteful number, since it uses less digits than its factorization.

220111001010100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201110010115 (or 2201110010108 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 220111001010100 its reverse (1010100111022), we get a palindrome (221121101121122).

The spelling of 220111001010100 in words is "two hundred twenty trillion, one hundred eleven billion, one million, ten thousand, one hundred".