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1221230010 = 2357112133697
BaseRepresentation
bin100100011001010…
…0111110110111010
310011002221220122010
41020302213312322
510000113330020
6321103110350
742156166230
oct11062476672
93132856563
101221230010
11577397200
122a0ba23b6
13166018710
14b8298950
1572330de0
hex48ca7dba

1221230010 has 192 divisors, whose sum is σ = 3966149376. Its totient is φ = 234178560.

The previous prime is 1221229993. The next prime is 1221230047. The reversal of 1221230010 is 100321221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 328482 + ... + 332178.

It is an arithmetic number, because the mean of its divisors is an integer number (20657028).

Almost surely, 21221230010 is an apocalyptic number.

1221230010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1221230010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1983074688).

1221230010 is an abundant number, since it is smaller than the sum of its proper divisors (2744919366).

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

1221230010 is a wasteful number, since it uses less digits than its factorization.

1221230010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3749 (or 3738 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1221230010 is about 34946.1014993089. The cubic root of 1221230010 is about 1068.8887085110. Note that the first 3 decimals are identical.

Adding to 1221230010 its reverse (100321221), we get a palindrome (1321551231).

The spelling of 1221230010 in words is "one billion, two hundred twenty-one million, two hundred thirty thousand, ten".