2211221102020 has 48 divisors (see below), whose sum is σ = 5317357006080. Its totient is φ = 756643469184.

The previous prime is 2211221102011. The next prime is 2211221102053. The reversal of 2211221102020 is 202011221122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2211221101985 and 2211221102003.

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, 15443904 + ... + 15586423.

It is an arithmetic number, because the mean of its divisors is an integer number (110778270960).

Almost surely, 2^{2211221102020} is an apocalyptic number.

2211221102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211221102020 is an abundant number, since it is smaller than the sum of its proper divisors (3106135904060).

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

2211221102020 is a wasteful number, since it uses less digits than its factorization.

2211221102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31030852 (or 31030850 counting only the distinct ones).

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

Adding to 2211221102020 its reverse (202011221122), we get a palindrome (2413232323142).

The spelling of 2211221102020 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, one hundred two thousand, twenty".