781101110102212 has 12 divisors (see below), whose sum is σ = 1366934248953616. Its totient is φ = 390548467544040.

The previous prime is 781101110102179. The next prime is 781101110102239. The reversal of 781101110102212 is 212201011101187.

It is a super-2 number, since 2×781101110102212² (a number of 31 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521034714 + ... + 522531697.

Almost surely, 2^{781101110102212} is an apocalyptic number.

It is an amenable number.

781101110102212 is a deficient number, since it is larger than the sum of its proper divisors (585833138851404).

781101110102212 is a wasteful number, since it uses less digits than its factorization.

781101110102212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043753538 (or 1043753536 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 28.

Adding to 781101110102212 its reverse (212201011101187), we get a palindrome (993302121203399).

The spelling of 781101110102212 in words is "seven hundred eighty-one trillion, one hundred one billion, one hundred ten million, one hundred two thousand, two hundred twelve".