102151420321 has 2 divisors, whose sum is σ = 102151420322. Its totient is φ = 102151420320.

The previous prime is 102151420303. The next prime is 102151420331. The reversal of 102151420321 is 123024151201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95147571600 + 7003848721 = 308460^2 + 83689^2 .

It is a cyclic number.

It is not a de Polignac number, because 102151420321 - 2¹¹ = 102151418273 is a prime.

It is a super-2 number, since 2×102151420321² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102151420292 and 102151420301.

It is not a weakly prime, because it can be changed into another prime (102151420331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51075710160 + 51075710161.

It is an arithmetic number, because the mean of its divisors is an integer number (51075710161).

Almost surely, 2^102151420321 is an apocalyptic number.

It is an amenable number.

102151420321 is a deficient number, since it is larger than the sum of its proper divisors (1).

102151420321 is an equidigital number, since it uses as much as digits as its factorization.

102151420321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 102151420321 its reverse (123024151201), we get a palindrome (225175571522).

The spelling of 102151420321 in words is "one hundred two billion, one hundred fifty-one million, four hundred twenty thousand, three hundred twenty-one".