20010012022001 has 4 divisors (see below), whose sum is σ = 20069388912612. Its totient is φ = 19950635131392.

The previous prime is 20010012021971. The next prime is 20010012022027. The reversal of 20010012022001 is 10022021001002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12642831816976 + 7367180205025 = 3555676^2 + 2714255^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010012022001 - 2¹⁴ = 20010012005617 is a prime.

It is a super-2 number, since 2×20010012022001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20010012022601) 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, 29688444800 + ... + 29688445473.

It is an arithmetic number, because the mean of its divisors is an integer number (5017347228153).

Almost surely, 2^{20010012022001} is an apocalyptic number.

It is an amenable number.

20010012022001 is a deficient number, since it is larger than the sum of its proper divisors (59376890611).

20010012022001 is an equidigital number, since it uses as much as digits as its factorization.

20010012022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59376890610.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20010012022001 its reverse (10022021001002), we get a palindrome (30032033023003).

The spelling of 20010012022001 in words is "twenty trillion, ten billion, twelve million, twenty-two thousand, one".