20687101036223 has 2 divisors, whose sum is σ = 20687101036224. Its totient is φ = 20687101036222.

The previous prime is 20687101036157. The next prime is 20687101036279. The reversal of 20687101036223 is 32263010178602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20687101036223 - 2¹⁰ = 20687101035199 is a prime.

It is a super-2 number, since 2×20687101036223² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20687101032223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10343550518111 + 10343550518112.

It is an arithmetic number, because the mean of its divisors is an integer number (10343550518112).

Almost surely, 2^{20687101036223} is an apocalyptic number.

20687101036223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20687101036223 is an equidigital number, since it uses as much as digits as its factorization.

20687101036223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 20687101036223 in words is "twenty trillion, six hundred eighty-seven billion, one hundred one million, thirty-six thousand, two hundred twenty-three".