212120001022201 has 32 divisors (see below), whose sum is σ = 233215439293440. Its totient is φ = 192034522208256.

The previous prime is 212120001022177. The next prime is 212120001022211. The reversal of 212120001022201 is 102220100021212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 212120001022201 - 2⁵ = 212120001022169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212120001022211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 275365560 + ... + 276134806.

It is an arithmetic number, because the mean of its divisors is an integer number (7287982477920).

Almost surely, 2^{212120001022201} is an apocalyptic number.

It is an amenable number.

212120001022201 is a deficient number, since it is larger than the sum of its proper divisors (21095438271239).

212120001022201 is a wasteful number, since it uses less digits than its factorization.

212120001022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771393.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212120001022201 its reverse (102220100021212), we get a palindrome (314340101043413).

The spelling of 212120001022201 in words is "two hundred twelve trillion, one hundred twenty billion, one million, twenty-two thousand, two hundred one".