102406220351 has 4 divisors (see below), whose sum is σ = 102561617400. Its totient is φ = 102250823304.

The previous prime is 102406220341. The next prime is 102406220393. The reversal of 102406220351 is 153022604201.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102406220351 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102406220351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102406220341) 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, 77697536 + ... + 77698853.

It is an arithmetic number, because the mean of its divisors is an integer number (25640404350).

Almost surely, 2^102406220351 is an apocalyptic number.

102406220351 is a deficient number, since it is larger than the sum of its proper divisors (155397049).

102406220351 is an equidigital number, since it uses as much as digits as its factorization.

102406220351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155397048.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 102406220351 its reverse (153022604201), we get a palindrome (255428824552).

The spelling of 102406220351 in words is "one hundred two billion, four hundred six million, two hundred twenty thousand, three hundred fifty-one".