2011012220220 has 96 divisors (see below), whose sum is σ = 5657768852736. Its totient is φ = 533710425600.

The previous prime is 2011012220219. The next prime is 2011012220249. The reversal of 2011012220220 is 220222101102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2011012220220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11251392 + ... + 11428728.

It is an arithmetic number, because the mean of its divisors is an integer number (58935092216).

Almost surely, 2^{2011012220220} is an apocalyptic number.

2011012220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011012220220 is an abundant number, since it is smaller than the sum of its proper divisors (3646756632516).

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

2011012220220 is a wasteful number, since it uses less digits than its factorization.

2011012220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178251 (or 178249 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2011012220220 its reverse (220222101102), we get a palindrome (2231234321322).

The spelling of 2011012220220 in words is "two trillion, eleven billion, twelve million, two hundred twenty thousand, two hundred twenty".