2120221212201 has 20 divisors (see below), whose sum is σ = 3195272755092. Its totient is φ = 1400972122368.

The previous prime is 2120221212167. The next prime is 2120221212253. The reversal of 2120221212201 is 1022121220212.

It is a happy number.

2120221212201 is a `hidden beast` number, since 212 + 0 + 221 + 212 + 20 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 79537536576 + 2040683675625 = 282024^2 + 1428525^2 .

It is not a de Polignac number, because 2120221212201 - 2¹⁰ = 2120221211177 is a prime.

It is a super-3 number, since 3×2120221212201³ (a number of 38 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2120221212271) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 115811956 + ... + 115830261.

Almost surely, 2^{2120221212201} is an apocalyptic number.

It is an amenable number.

2120221212201 is a deficient number, since it is larger than the sum of its proper divisors (1075051542891).

2120221212201 is a wasteful number, since it uses less digits than its factorization.

2120221212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231642342 (or 231642333 counting only the distinct ones).

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

Adding to 2120221212201 its reverse (1022121220212), we get a palindrome (3142342432413).

The spelling of 2120221212201 in words is "two trillion, one hundred twenty billion, two hundred twenty-one million, two hundred twelve thousand, two hundred one".