20212212121100 has 36 divisors (see below), whose sum is σ = 43861093236408. Its totient is φ = 8084775552000.

The previous prime is 20212212121093. The next prime is 20212212121139. The reversal of 20212212121100 is 112121221202.

It is a super-2 number, since 2×20212212121100² (a number of 27 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 6280940 + ... + 8937260.

Almost surely, 2^{20212212121100} is an apocalyptic number.

20212212121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212212121100 is an abundant number, since it is smaller than the sum of its proper divisors (23648881115308).

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

20212212121100 is a wasteful number, since it uses less digits than its factorization.

20212212121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732426 (or 2732419 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20212212121100 its reverse (112121221202), we get a palindrome (20324333342302).

The spelling of 20212212121100 in words is "twenty trillion, two hundred twelve billion, two hundred twelve million, one hundred twenty-one thousand, one hundred".