2111201222020 has 48 divisors (see below), whose sum is σ = 4836846966336. Its totient is φ = 767665584000.

The previous prime is 2111201222003. The next prime is 2111201222023. The reversal of 2111201222020 is 202221021112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2111201221985 and 2111201222003.

It is not an unprimeable number, because it can be changed into a prime (2111201222023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3707755 + ... + 4239085.

It is an arithmetic number, because the mean of its divisors is an integer number (100767645132).

Almost surely, 2^{2111201222020} is an apocalyptic number.

2111201222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111201222020 is an abundant number, since it is smaller than the sum of its proper divisors (2725645744316).

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

2111201222020 is a wasteful number, since it uses less digits than its factorization.

2111201222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549412 (or 549410 counting only the distinct ones).

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

Adding to 2111201222020 its reverse (202221021112), we get a palindrome (2313422243132).

The spelling of 2111201222020 in words is "two trillion, one hundred eleven billion, two hundred one million, two hundred twenty-two thousand, twenty".