212021120221001 has 128 divisors (see below), whose sum is σ = 283599881994240. Its totient is φ = 153979418880000.

The previous prime is 212021120220971. The next prime is 212021120221033. The reversal of 212021120221001 is 100122021120212.

It is a de Polignac number, because none of the positive numbers 2^k-212021120221001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212021120221091) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1498915586 + ... + 1499057028.

It is an arithmetic number, because the mean of its divisors is an integer number (2215624078080).

Almost surely, 2^{212021120221001} is an apocalyptic number.

It is an amenable number.

212021120221001 is a deficient number, since it is larger than the sum of its proper divisors (71578761773239).

212021120221001 is a wasteful number, since it uses less digits than its factorization.

212021120221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141847.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212021120221001 its reverse (100122021120212), we get a palindrome (312143141341213).

The spelling of 212021120221001 in words is "two hundred twelve trillion, twenty-one billion, one hundred twenty million, two hundred twenty-one thousand, one".