212021130220 has 24 divisors (see below), whose sum is σ = 445977915264. Its totient is φ = 84668729856.

The previous prime is 212021130203. The next prime is 212021130271. The reversal of 212021130220 is 22031120212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212021130194 and 212021130203.

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, 8720197 + ... + 8744476.

It is an arithmetic number, because the mean of its divisors is an integer number (18582413136).

Almost surely, 2^212021130220 is an apocalyptic number.

212021130220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212021130220 is an abundant number, since it is smaller than the sum of its proper divisors (233956785044).

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

212021130220 is a wasteful number, since it uses less digits than its factorization.

212021130220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17465289 (or 17465287 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 212021130220 its reverse (22031120212), we get a palindrome (234052250432).

The spelling of 212021130220 in words is "two hundred twelve billion, twenty-one million, one hundred thirty thousand, two hundred twenty".