20222121001212 has 36 divisors (see below), whose sum is σ = 55049107171240. Its totient is φ = 6222191077152.

The previous prime is 20222121001189. The next prime is 20222121001231. The reversal of 20222121001212 is 21210012122202.

It is a happy number.

20222121001212 is a `hidden beast` number, since 20 + 2 + 221 + 210 + 0 + 1 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21604829662 + ... + 21604830597.

Almost surely, 2^{20222121001212} is an apocalyptic number.

It is an amenable number.

20222121001212 is an abundant number, since it is smaller than the sum of its proper divisors (34826986170028).

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

20222121001212 is a wasteful number, since it uses less digits than its factorization.

20222121001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43209660282 (or 43209660277 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20222121001212 its reverse (21210012122202), we get a palindrome (41432133123414).

The spelling of 20222121001212 in words is "twenty trillion, two hundred twenty-two billion, one hundred twenty-one million, one thousand, two hundred twelve".