20210222121212 has 24 divisors (see below), whose sum is σ = 35582266978272. Its totient is φ = 10044039488000.

The previous prime is 20210222121179. The next prime is 20210222121217. The reversal of 20210222121212 is 21212122201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210222121217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21969008 + ... + 22870455.

It is an arithmetic number, because the mean of its divisors is an integer number (1482594457428).

Almost surely, 2^{20210222121212} is an apocalyptic number.

It is an amenable number.

20210222121212 is a deficient number, since it is larger than the sum of its proper divisors (15372044857060).

20210222121212 is a wasteful number, since it uses less digits than its factorization.

20210222121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44840149 (or 44840147 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20210222121212 its reverse (21212122201202), we get a palindrome (41422344322414).

The spelling of 20210222121212 in words is "twenty trillion, two hundred ten billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twelve".