77811222112102 has 16 divisors (see below), whose sum is σ = 118057351852080. Its totient is φ = 38458987003008.

The previous prime is 77811222112081. The next prime is 77811222112121. The reversal of 77811222112102 is 20121122211877.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53152848 + ... + 54597139.

It is an arithmetic number, because the mean of its divisors is an integer number (7378584490755).

Almost surely, 2^{77811222112102} is an apocalyptic number.

77811222112102 is a deficient number, since it is larger than the sum of its proper divisors (40246129739978).

77811222112102 is a wasteful number, since it uses less digits than its factorization.

77811222112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107754135.

The product of its (nonzero) digits is 12544, while the sum is 37.

Adding to 77811222112102 its reverse (20121122211877), we get a palindrome (97932344323979).

The spelling of 77811222112102 in words is "seventy-seven trillion, eight hundred eleven billion, two hundred twenty-two million, one hundred twelve thousand, one hundred two".