212033121220 has 48 divisors (see below), whose sum is σ = 447676392240. Its totient is φ = 84355088384.

The previous prime is 212033121191. The next prime is 212033121233. The reversal of 212033121220 is 22121330212.

It can be written as a sum of positive squares in 8 ways, for example, as 14369296384 + 197663824836 = 119872^2 + 444594^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15473412 + ... + 15487108.

It is an arithmetic number, because the mean of its divisors is an integer number (9326591505).

Almost surely, 2^212033121220 is an apocalyptic number.

212033121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212033121220 is an abundant number, since it is smaller than the sum of its proper divisors (235643271020).

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

212033121220 is a wasteful number, since it uses less digits than its factorization.

212033121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17832 (or 17830 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212033121220 its reverse (22121330212), we get a palindrome (234154451432).

The spelling of 212033121220 in words is "two hundred twelve billion, thirty-three million, one hundred twenty-one thousand, two hundred twenty".