10154188021 has 2 divisors, whose sum is σ = 10154188022. Its totient is φ = 10154188020.

The previous prime is 10154188019. The next prime is 10154188027. The reversal of 10154188021 is 12088145101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9582452100 + 571735921 = 97890^2 + 23911^2 .

It is a cyclic number.

It is not a de Polignac number, because 10154188021 - 2¹ = 10154188019 is a prime.

Together with 10154188019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10154188027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5077094010 + 5077094011.

It is an arithmetic number, because the mean of its divisors is an integer number (5077094011).

Almost surely, 2^10154188021 is an apocalyptic number.

It is an amenable number.

10154188021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10154188021 is an equidigital number, since it uses as much as digits as its factorization.

10154188021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2560, while the sum is 31.

The spelling of 10154188021 in words is "ten billion, one hundred fifty-four million, one hundred eighty-eight thousand, twenty-one".