1011201112220 has 48 divisors (see below), whose sum is σ = 2289392097888. Its totient is φ = 372954827520.

The previous prime is 1011201112189. The next prime is 1011201112231. The reversal of 1011201112220 is 222111021101.

It is a junction number, because it is equal to n+sod(n) for n = 1011201112195 and 1011201112204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1908191 + ... + 2379830.

It is an arithmetic number, because the mean of its divisors is an integer number (47695668706).

Almost surely, 2^{1011201112220} is an apocalyptic number.

1011201112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011201112220 is an abundant number, since it is smaller than the sum of its proper divisors (1278190985668).

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

1011201112220 is a wasteful number, since it uses less digits than its factorization.

1011201112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4288950 (or 4288948 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1011201112220 its reverse (222111021101), we get a palindrome (1233312133321).

The spelling of 1011201112220 in words is "one trillion, eleven billion, two hundred one million, one hundred twelve thousand, two hundred twenty".