1228169929072 has 40 divisors (see below), whose sum is σ = 2384585087600. Its totient is φ = 612793589760.

The previous prime is 1228169929069. The next prime is 1228169929081. The reversal of 1228169929072 is 2709299618221.

It is a junction number, because it is equal to n+sod(n) for n = 1228169928998 and 1228169929016.

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, 58138672 + ... + 58159792.

It is an arithmetic number, because the mean of its divisors is an integer number (59614627190).

Almost surely, 2^{1228169929072} is an apocalyptic number.

It is an amenable number.

1228169929072 is a deficient number, since it is larger than the sum of its proper divisors (1156415158528).

1228169929072 is a wasteful number, since it uses less digits than its factorization.

1228169929072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28601 (or 28595 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 58.

The spelling of 1228169929072 in words is "one trillion, two hundred twenty-eight billion, one hundred sixty-nine million, nine hundred twenty-nine thousand, seventy-two".