102140403221 has 8 divisors (see below), whose sum is σ = 109219442904. Its totient is φ = 95180339200.

The previous prime is 102140403217. The next prime is 102140403223. The reversal of 102140403221 is 122304041201.

It can be written as a sum of positive squares in 4 ways, for example, as 89512262596 + 12628140625 = 299186^2 + 112375^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102140403221 - 2² = 102140403217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102140403193 and 102140403202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102140403223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29742140 + ... + 29745573.

It is an arithmetic number, because the mean of its divisors is an integer number (13652430363).

Almost surely, 2^102140403221 is an apocalyptic number.

It is an amenable number.

102140403221 is a deficient number, since it is larger than the sum of its proper divisors (7079039683).

102140403221 is a wasteful number, since it uses less digits than its factorization.

102140403221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59487831.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 102140403221 its reverse (122304041201), we get a palindrome (224444444422).

The spelling of 102140403221 in words is "one hundred two billion, one hundred forty million, four hundred three thousand, two hundred twenty-one".