2211012021220 has 48 divisors (see below), whose sum is σ = 4929086711808. Its totient is φ = 830207628800.

The previous prime is 2211012021217. The next prime is 2211012021221. The reversal of 2211012021220 is 221202101122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2211012021194 and 2211012021203.

It is not an unprimeable number, because it can be changed into a prime (2211012021221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8359306 + ... + 8619745.

It is an arithmetic number, because the mean of its divisors is an integer number (102689306496).

Almost surely, 2^{2211012021220} is an apocalyptic number.

2211012021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211012021220 is an abundant number, since it is smaller than the sum of its proper divisors (2718074690588).

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

2211012021220 is a wasteful number, since it uses less digits than its factorization.

2211012021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16979460 (or 16979458 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2211012021220 its reverse (221202101122), we get a palindrome (2432214122342).

The spelling of 2211012021220 in words is "two trillion, two hundred eleven billion, twelve million, twenty-one thousand, two hundred twenty".