1221050400230 has 16 divisors (see below), whose sum is σ = 2197918355904. Its totient is φ = 488414018880.

The previous prime is 1221050400217. The next prime is 1221050400233. The reversal of 1221050400230 is 320040501221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221050400233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115850 + ... + 1567010.

It is an arithmetic number, because the mean of its divisors is an integer number (137369897244).

Almost surely, 2^{1221050400230} is an apocalyptic number.

1221050400230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221050400230 is a deficient number, since it is larger than the sum of its proper divisors (976867955674).

1221050400230 is a wasteful number, since it uses less digits than its factorization.

1221050400230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535311.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 1221050400230 its reverse (320040501221), we get a palindrome (1541090901451).

The spelling of 1221050400230 in words is "one trillion, two hundred twenty-one billion, fifty million, four hundred thousand, two hundred thirty".