102421303134511 has 4 divisors (see below), whose sum is σ = 102426460060024. Its totient is φ = 102416146209000.

The previous prime is 102421303134499. The next prime is 102421303134541. The reversal of 102421303134511 is 115431303124201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102421303134511 - 2¹⁵ = 102421303101743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102421303134541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2578432965 + ... + 2578472686.

It is an arithmetic number, because the mean of its divisors is an integer number (25606615015006).

Almost surely, 2^{102421303134511} is an apocalyptic number.

102421303134511 is a deficient number, since it is larger than the sum of its proper divisors (5156925513).

102421303134511 is an equidigital number, since it uses as much as digits as its factorization.

102421303134511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5156925512.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 102421303134511 its reverse (115431303124201), we get a palindrome (217852606258712).

The spelling of 102421303134511 in words is "one hundred two trillion, four hundred twenty-one billion, three hundred three million, one hundred thirty-four thousand, five hundred eleven".