781130222102 has 16 divisors (see below), whose sum is σ = 1180303101600. Its totient is φ = 387704921472.

The previous prime is 781130222101. The next prime is 781130222111. The reversal of 781130222102 is 201222031187.

It is a super-2 number, since 2×781130222102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (781130222101) 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, 2093993 + ... + 2438660.

It is an arithmetic number, because the mean of its divisors is an integer number (73768943850).

Almost surely, 2^781130222102 is an apocalyptic number.

781130222102 is a deficient number, since it is larger than the sum of its proper divisors (399172879498).

781130222102 is a wasteful number, since it uses less digits than its factorization.

781130222102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533287.

The product of its (nonzero) digits is 2688, while the sum is 29.

Adding to 781130222102 its reverse (201222031187), we get a palindrome (982352253289).

The spelling of 781130222102 in words is "seven hundred eighty-one billion, one hundred thirty million, two hundred twenty-two thousand, one hundred two".