212011020112221 has 48 divisors (see below), whose sum is σ = 334505818902528. Its totient is φ = 128326985661600.

The previous prime is 212011020112081. The next prime is 212011020112261. The reversal of 212011020112221 is 122211020110212.

212011020112221 is a `hidden beast` number, since 2 + 120 + 110 + 201 + 12 + 221 = 666.

It is not a de Polignac number, because 212011020112221 - 2³⁴ = 211993840243037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212011020112194 and 212011020112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212011020112261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2142623070 + ... + 2142722016.

It is an arithmetic number, because the mean of its divisors is an integer number (6968871227136).

Almost surely, 2^{212011020112221} is an apocalyptic number.

It is an amenable number.

212011020112221 is a deficient number, since it is larger than the sum of its proper divisors (122494798790307).

212011020112221 is a wasteful number, since it uses less digits than its factorization.

212011020112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126462 (or 126459 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212011020112221 its reverse (122211020110212), we get a palindrome (334222040222433).

The spelling of 212011020112221 in words is "two hundred twelve trillion, eleven billion, twenty million, one hundred twelve thousand, two hundred twenty-one".