1220784990050 has 12 divisors (see below), whose sum is σ = 2270660081586. Its totient is φ = 488313996000.

The previous prime is 1220784990017. The next prime is 1220784990053. The reversal of 1220784990050 is 500994870221.

It can be written as a sum of positive squares in 3 ways, for example, as 889058524201 + 331726465849 = 942899^2 + 575957^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220784989977 and 1220784990004.

It is not an unprimeable number, because it can be changed into a prime (1220784990053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12207849851 + ... + 12207849950.

Almost surely, 2^{1220784990050} is an apocalyptic number.

1220784990050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220784990050 is a deficient number, since it is larger than the sum of its proper divisors (1049875091536).

1220784990050 is a wasteful number, since it uses less digits than its factorization.

1220784990050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24415699813 (or 24415699808 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 1220784990050 in words is "one trillion, two hundred twenty billion, seven hundred eighty-four million, nine hundred ninety thousand, fifty".