152000000021 has 2 divisors, whose sum is σ = 152000000022. Its totient is φ = 152000000020.

The previous prime is 151999999951. The next prime is 152000000029. The reversal of 152000000021 is 120000000251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142151620900 + 9848379121 = 377030^2 + 99239^2 .

It is a cyclic number.

It is not a de Polignac number, because 152000000021 - 2²⁶ = 151932891157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 151999999939 and 152000000011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (152000000029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76000000010 + 76000000011.

It is an arithmetic number, because the mean of its divisors is an integer number (76000000011).

Almost surely, 2^152000000021 is an apocalyptic number.

It is an amenable number.

152000000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

152000000021 is an equidigital number, since it uses as much as digits as its factorization.

152000000021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20, while the sum is 11.

Adding to 152000000021 its reverse (120000000251), we get a palindrome (272000000272).

The spelling of 152000000021 in words is "one hundred fifty-two billion, twenty-one", and thus it is an aban number.