20212011012220 has 24 divisors (see below), whose sum is σ = 42513793786800. Its totient is φ = 8071743326592.

The previous prime is 20212011012209. The next prime is 20212011012353. The reversal of 20212011012220 is 2221011021202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20212011012194 and 20212011012203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 816304705 + ... + 816329464.

It is an arithmetic number, because the mean of its divisors is an integer number (1771408074450).

Almost surely, 2^{20212011012220} is an apocalyptic number.

20212011012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212011012220 is an abundant number, since it is smaller than the sum of its proper divisors (22301782774580).

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

20212011012220 is a wasteful number, since it uses less digits than its factorization.

20212011012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632634797 (or 1632634795 counting only the distinct ones).

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

Adding to 20212011012220 its reverse (2221011021202), we get a palindrome (22433022033422).

The spelling of 20212011012220 in words is "twenty trillion, two hundred twelve billion, eleven million, twelve thousand, two hundred twenty".