20210212212 has 24 divisors (see below), whose sum is σ = 47174632512. Its totient is φ = 6734241600.

The previous prime is 20210212177. The next prime is 20210212223. The reversal of 20210212212 is 21221201202.

It is a junction number, because it is equal to n+sod(n) for n = 20210212191 and 20210212200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278089 + ... + 343152.

It is an arithmetic number, because the mean of its divisors is an integer number (1965609688).

Almost surely, 2^20210212212 is an apocalyptic number.

It is an amenable number.

20210212212 is an abundant number, since it is smaller than the sum of its proper divisors (26964420300).

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

20210212212 is a wasteful number, since it uses less digits than its factorization.

20210212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623959 (or 623957 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20210212212 its reverse (21221201202), we get a palindrome (41431413414).

The spelling of 20210212212 in words is "twenty billion, two hundred ten million, two hundred twelve thousand, two hundred twelve".