20201001122251 has 2 divisors, whose sum is σ = 20201001122252. Its totient is φ = 20201001122250.

The previous prime is 20201001122189. The next prime is 20201001122287. The reversal of 20201001122251 is 15222110010202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20201001122251 - 2⁷ = 20201001122123 is a prime.

It is a super-2 number, since 2×20201001122251² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20201001128251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100500561125 + 10100500561126.

It is an arithmetic number, because the mean of its divisors is an integer number (10100500561126).

Almost surely, 2^{20201001122251} is an apocalyptic number.

20201001122251 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201001122251 is an equidigital number, since it uses as much as digits as its factorization.

20201001122251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 19.

Adding to 20201001122251 its reverse (15222110010202), we get a palindrome (35423111132453).

The spelling of 20201001122251 in words is "twenty trillion, two hundred one billion, one million, one hundred twenty-two thousand, two hundred fifty-one".