20021102002093 has 2 divisors, whose sum is σ = 20021102002094. Its totient is φ = 20021102002092.

The previous prime is 20021102002049. The next prime is 20021102002117. The reversal of 20021102002093 is 39020020112002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16348137418089 + 3672964584004 = 4043283^2 + 1916498^2 .

It is a cyclic number.

It is not a de Polignac number, because 20021102002093 - 2³⁷ = 19883663048621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20021102002193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010551001046 + 10010551001047.

It is an arithmetic number, because the mean of its divisors is an integer number (10010551001047).

Almost surely, 2^{20021102002093} is an apocalyptic number.

It is an amenable number.

20021102002093 is a deficient number, since it is larger than the sum of its proper divisors (1).

20021102002093 is an equidigital number, since it uses as much as digits as its factorization.

20021102002093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20021102002093 its reverse (39020020112002), we get a palindrome (59041122114095).

The spelling of 20021102002093 in words is "twenty trillion, twenty-one billion, one hundred two million, two thousand, ninety-three".