20120211211201 has 8 divisors (see below), whose sum is σ = 21311199359784. Its totient is φ = 18930050430720.

The previous prime is 20120211211171. The next prime is 20120211211211. The reversal of 20120211211201 is 10211211202102.

It can be written as a sum of positive squares in 4 ways, for example, as 5014124122176 + 15106087089025 = 2239224^2 + 3886655^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20120211211201 - 2⁹ = 20120211210689 is a prime.

It is a super-2 number, since 2×20120211211201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120211211211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206791950 + ... + 206889223.

It is an arithmetic number, because the mean of its divisors is an integer number (2663899919973).

Almost surely, 2^{20120211211201} is an apocalyptic number.

It is an amenable number.

20120211211201 is a deficient number, since it is larger than the sum of its proper divisors (1190988148583).

20120211211201 is a wasteful number, since it uses less digits than its factorization.

20120211211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413684051.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20120211211201 its reverse (10211211202102), we get a palindrome (30331422413303).

Subtracting from 20120211211201 its reverse (10211211202102), we obtain a palindrome (9909000009099).

The spelling of 20120211211201 in words is "twenty trillion, one hundred twenty billion, two hundred eleven million, two hundred eleven thousand, two hundred one".