212020012221210 has 64 divisors (see below), whose sum is σ = 565394326536960. Its totient is φ = 56537907197760.

The previous prime is 212020012221203. The next prime is 212020012221323. The reversal of 212020012221210 is 12122210020212.

It is a happy number.

212020012221210 is a `hidden beast` number, since 2 + 1 + 20 + 200 + 12 + 221 + 210 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14896915 + ... + 25415705.

It is an arithmetic number, because the mean of its divisors is an integer number (8834286352140).

Almost surely, 2^{212020012221210} is an apocalyptic number.

212020012221210 is an abundant number, since it is smaller than the sum of its proper divisors (353374314315750).

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

212020012221210 is a wasteful number, since it uses less digits than its factorization.

212020012221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10593460 (or 10593454 counting only the distinct ones).

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

Adding to 212020012221210 its reverse (12122210020212), we get a palindrome (224142222241422).

The spelling of 212020012221210 in words is "two hundred twelve trillion, twenty billion, twelve million, two hundred twenty-one thousand, two hundred ten".