212120222021010 has 48 divisors (see below), whose sum is σ = 551583677765016. Its totient is φ = 56558100178944.

The previous prime is 212120222021003. The next prime is 212120222021041. The reversal of 212120222021010 is 10120222021212.

It is a happy number.

212120222021010 is a `hidden beast` number, since 2 + 1 + 21 + 202 + 220 + 210 + 10 = 666.

212120222021010 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 175394185860609 + 36726036160401 = 13243647^2 + 6060201^2 .

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 23 ways as a sum of consecutive naturals, for example, 151222159 + ... + 152618418.

Almost surely, 2^{212120222021010} is an apocalyptic number.

212120222021010 is an abundant number, since it is smaller than the sum of its proper divisors (339463455744006).

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

212120222021010 is a wasteful number, since it uses less digits than its factorization.

212120222021010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303848347 (or 303848344 counting only the distinct ones).

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

Adding to 212120222021010 its reverse (10120222021212), we get a palindrome (222240444042222).

The spelling of 212120222021010 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred twenty-two million, twenty-one thousand, ten".