212120331133330 has 32 divisors (see below), whose sum is σ = 382215721225968. Its totient is φ = 84759454406400.

The previous prime is 212120331133309. The next prime is 212120331133387. The reversal of 212120331133330 is 33331133021212.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 109365434430849 + 102754896702481 = 10457793^2 + 10136809^2 .

It is a super-2 number, since 2×212120331133330² (a number of 29 digits) contains 22 as substring.

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, 102754404 + ... + 104798416.

Almost surely, 2^{212120331133330} is an apocalyptic number.

212120331133330 is a deficient number, since it is larger than the sum of its proper divisors (170095390092638).

212120331133330 is a wasteful number, since it uses less digits than its factorization.

212120331133330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054862.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 212120331133330 its reverse (33331133021212), we get a palindrome (245451464154542).

The spelling of 212120331133330 in words is "two hundred twelve trillion, one hundred twenty billion, three hundred thirty-one million, one hundred thirty-three thousand, three hundred thirty".