2012211220220 has 48 divisors (see below), whose sum is σ = 4264066473408. Its totient is φ = 797569274880.

The previous prime is 2012211220219. The next prime is 2012211220231. The reversal of 2012211220220 is 220221122102.

It is a happy number.

It is a super-2 number, since 2×2012211220220² (a number of 25 digits) contains 22 as substring.

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, 9456842 + ... + 9667278.

It is an arithmetic number, because the mean of its divisors is an integer number (88834718196).

Almost surely, 2^{2012211220220} is an apocalyptic number.

2012211220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012211220220 is an abundant number, since it is smaller than the sum of its proper divisors (2251855253188).

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

2012211220220 is a wasteful number, since it uses less digits than its factorization.

2012211220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214790 (or 214788 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2012211220220 its reverse (220221122102), we get a palindrome (2232432342322).

The spelling of 2012211220220 in words is "two trillion, twelve billion, two hundred eleven million, two hundred twenty thousand, two hundred twenty".