2011010111220 has 48 divisors (see below), whose sum is σ = 6142721796288. Its totient is φ = 487517602560.

The previous prime is 2011010111207. The next prime is 2011010111233. The reversal of 2011010111220 is 221110101102.

It is an interprime number because it is at equal distance from previous prime (2011010111207) and next prime (2011010111233).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2011010111196 and 2011010111205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1523491849 + ... + 1523493168.

It is an arithmetic number, because the mean of its divisors is an integer number (127973370756).

Almost surely, 2^{2011010111220} is an apocalyptic number.

2011010111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011010111220 is an abundant number, since it is smaller than the sum of its proper divisors (4131711685068).

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

2011010111220 is a wasteful number, since it uses less digits than its factorization.

2011010111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3046985040 (or 3046985038 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2011010111220 its reverse (221110101102), we get a palindrome (2232120212322).

The spelling of 2011010111220 in words is "two trillion, eleven billion, ten million, one hundred eleven thousand, two hundred twenty".