20022202021951 has 2 divisors, whose sum is σ = 20022202021952. Its totient is φ = 20022202021950.

The previous prime is 20022202021931. The next prime is 20022202022003. The reversal of 20022202021951 is 15912020222002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20022202021951 - 2⁹ = 20022202021439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20022202021931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011101010975 + 10011101010976.

It is an arithmetic number, because the mean of its divisors is an integer number (10011101010976).

Almost surely, 2^{20022202021951} is an apocalyptic number.

20022202021951 is a deficient number, since it is larger than the sum of its proper divisors (1).

20022202021951 is an equidigital number, since it uses as much as digits as its factorization.

20022202021951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 20022202021951 its reverse (15912020222002), we get a palindrome (35934222243953).

The spelling of 20022202021951 in words is "twenty trillion, twenty-two billion, two hundred two million, twenty-one thousand, nine hundred fifty-one".