20110100993 has 2 divisors, whose sum is σ = 20110100994. Its totient is φ = 20110100992.

The previous prime is 20110100963. The next prime is 20110101061. The reversal of 20110100993 is 39900101102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15478345744 + 4631755249 = 124412^2 + 68057^2 .

It is a cyclic number.

It is not a de Polignac number, because 20110100993 - 2¹⁶ = 20110035457 is a prime.

It is not a weakly prime, because it can be changed into another prime (20110100903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055050496 + 10055050497.

It is an arithmetic number, because the mean of its divisors is an integer number (10055050497).

Almost surely, 2^20110100993 is an apocalyptic number.

It is an amenable number.

20110100993 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110100993 is an equidigital number, since it uses as much as digits as its factorization.

20110100993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 26.

It can be divided in two parts, 201101009 and 93, that added together give a palindrome (201101102).

The spelling of 20110100993 in words is "twenty billion, one hundred ten million, one hundred thousand, nine hundred ninety-three".