1220421112 has 16 divisors (see below), whose sum is σ = 2304754200. Its totient is φ = 605820000.

The previous prime is 1220421079. The next prime is 1220421157. The reversal of 1220421112 is 2111240221.

It is a congruent number.

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, 547639 + ... + 549862.

Almost surely, 2^1220421112 is an apocalyptic number.

It is an amenable number.

1220421112 is a deficient number, since it is larger than the sum of its proper divisors (1084333088).

1220421112 is a wasteful number, since it uses less digits than its factorization.

1220421112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097646 (or 1097642 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1220421112 is about 34934.5260737855. The cubic root of 1220421112 is about 1068.6526588180.

Adding to 1220421112 its reverse (2111240221), we get a palindrome (3331661333).

The spelling of 1220421112 in words is "one billion, two hundred twenty million, four hundred twenty-one thousand, one hundred twelve".