1221524532050 has 24 divisors (see below), whose sum is σ = 2273551470000. Its totient is φ = 488283825680.

The previous prime is 1221524532031. The next prime is 1221524532079. The reversal of 1221524532050 is 502354251221.

It is a junction number, because it is equal to n+sod(n) for n = 1221524531998 and 1221524532016.

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 11 ways as a sum of consecutive naturals, for example, 8073980 + ... + 8223879.

It is an arithmetic number, because the mean of its divisors is an integer number (94731311250).

Almost surely, 2^{1221524532050} is an apocalyptic number.

1221524532050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221524532050 is a deficient number, since it is larger than the sum of its proper divisors (1052026937950).

1221524532050 is a wasteful number, since it uses less digits than its factorization.

1221524532050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16299370 (or 16299365 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 1221524532050 its reverse (502354251221), we get a palindrome (1723878783271).

The spelling of 1221524532050 in words is "one trillion, two hundred twenty-one billion, five hundred twenty-four million, five hundred thirty-two thousand, fifty".