20212223424444 has 60 divisors (see below), whose sum is σ = 52841832759408. Its totient is φ = 6737014036800.

The previous prime is 20212223424433. The next prime is 20212223424461. The reversal of 20212223424444 is 44442432221202.

20212223424444 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 2 + 223 + 424 + 4 + 4 + 4 = 666.

It is a super-3 number, since 3×20212223424444³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20212223424399 and 20212223424408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3755464 + ... + 7384304.

Almost surely, 2^{20212223424444} is an apocalyptic number.

It is an amenable number.

20212223424444 is an abundant number, since it is smaller than the sum of its proper divisors (32629609334964).

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

20212223424444 is a wasteful number, since it uses less digits than its factorization.

20212223424444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646048 (or 3646037 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 36.

Adding to 20212223424444 its reverse (44442432221202), we get a palindrome (64654655645646).

The spelling of 20212223424444 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-three million, four hundred twenty-four thousand, four hundred forty-four".