20021102010953 has 2 divisors, whose sum is σ = 20021102010954. Its totient is φ = 20021102010952.

The previous prime is 20021102010947. The next prime is 20021102010989. The reversal of 20021102010953 is 35901020112002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16850433885184 + 3170668125769 = 4104928^2 + 1780637^2 .

It is a cyclic number.

It is not a de Polignac number, because 20021102010953 - 2⁴ = 20021102010937 is a prime.

It is not a weakly prime, because it can be changed into another prime (20021102010913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010551005476 + 10010551005477.

It is an arithmetic number, because the mean of its divisors is an integer number (10010551005477).

Almost surely, 2^{20021102010953} is an apocalyptic number.

It is an amenable number.

20021102010953 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021102010953 is an equidigital number, since it uses as much as digits as its factorization.

20021102010953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 20021102010953 its reverse (35901020112002), we get a palindrome (55922122122955).

The spelling of 20021102010953 in words is "twenty trillion, twenty-one billion, one hundred two million, ten thousand, nine hundred fifty-three".