20120211220201 has 4 divisors (see below), whose sum is σ = 20420512880272. Its totient is φ = 19819909560132.

The previous prime is 20120211220147. The next prime is 20120211220231. The reversal of 20120211220201 is 10202211202102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20120211220201 - 2¹⁷ = 20120211089129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120211220231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150150829935 + ... + 150150830068.

It is an arithmetic number, because the mean of its divisors is an integer number (5105128220068).

Almost surely, 2^{20120211220201} is an apocalyptic number.

It is an amenable number.

20120211220201 is a deficient number, since it is larger than the sum of its proper divisors (300301660071).

20120211220201 is an equidigital number, since it uses as much as digits as its factorization.

20120211220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300301660070.

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

Adding to 20120211220201 its reverse (10202211202102), we get a palindrome (30322422422303).

The spelling of 20120211220201 in words is "twenty trillion, one hundred twenty billion, two hundred eleven million, two hundred twenty thousand, two hundred one".