20012122120201 has 8 divisors (see below), whose sum is σ = 20340932199944. Its totient is φ = 19683335992320.

The previous prime is 20012122120189. The next prime is 20012122120223. The reversal of 20012122120201 is 10202122121002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1474585205625 + 18537536914576 = 1214325^2 + 4305524^2 .

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 20012122120201 - 2¹⁷ = 20012121989129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012122124201) 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, 4299330 + ... + 7649083.

It is an arithmetic number, because the mean of its divisors is an integer number (2542616524993).

Almost surely, 2^{20012122120201} is an apocalyptic number.

It is an amenable number.

20012122120201 is a deficient number, since it is larger than the sum of its proper divisors (328810079743).

20012122120201 is a wasteful number, since it uses less digits than its factorization.

20012122120201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11975931.

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

Adding to 20012122120201 its reverse (10202122121002), we get a palindrome (30214244241203).

The spelling of 20012122120201 in words is "twenty trillion, twelve billion, one hundred twenty-two million, one hundred twenty thousand, two hundred one".