1220129092 has 24 divisors (see below), whose sum is σ = 2627971136. Its totient is φ = 482688288.

The previous prime is 1220129087. The next prime is 1220129101. The reversal of 1220129092 is 2909210221.

It is a super-2 number, since 2×1220129092² = 2977430002289488928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1220129092.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1675638 + ... + 1676365.

Almost surely, 2^1220129092 is an apocalyptic number.

It is an amenable number.

1220129092 is an abundant number, since it is smaller than the sum of its proper divisors (1407842044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220129092 is a wasteful number, since it uses less digits than its factorization.

1220129092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3352027 (or 3352025 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1220129092 is about 34930.3462908686. The cubic root of 1220129092 is about 1068.5674169726.

The spelling of 1220129092 in words is "one billion, two hundred twenty million, one hundred twenty-nine thousand, ninety-two".