20212144121228 has 48 divisors (see below), whose sum is σ = 39799321712640. Its totient is φ = 8934541545600.

The previous prime is 20212144121227. The next prime is 20212144121233. The reversal of 20212144121228 is 82212144121202.

It is a junction number, because it is equal to n+sod(n) for n = 20212144121194 and 20212144121203.

It is not an unprimeable number, because it can be changed into a prime (20212144121227) 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, 140940668 + ... + 141084003.

It is an arithmetic number, because the mean of its divisors is an integer number (829152535680).

Almost surely, 2^{20212144121228} is an apocalyptic number.

It is an amenable number.

20212144121228 is a deficient number, since it is larger than the sum of its proper divisors (19587177591412).

20212144121228 is a wasteful number, since it uses less digits than its factorization.

20212144121228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282024758 (or 282024756 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The spelling of 20212144121228 in words is "twenty trillion, two hundred twelve billion, one hundred forty-four million, one hundred twenty-one thousand, two hundred twenty-eight".