1221602227250 has 64 divisors (see below), whose sum is σ = 2336054722560. Its totient is φ = 478129777600.

The previous prime is 1221602227249. The next prime is 1221602227253. The reversal of 1221602227250 is 527222061221.

It is not an unprimeable number, because it can be changed into a prime (1221602227253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62370959 + ... + 62390541.

It is an arithmetic number, because the mean of its divisors is an integer number (36500855040).

Almost surely, 2^{1221602227250} is an apocalyptic number.

1221602227250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221602227250 is a deficient number, since it is larger than the sum of its proper divisors (1114452495310).

1221602227250 is a wasteful number, since it uses less digits than its factorization.

1221602227250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24956 (or 24946 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

Adding to 1221602227250 its reverse (527222061221), we get a palindrome (1748824288471).

The spelling of 1221602227250 in words is "one trillion, two hundred twenty-one billion, six hundred two million, two hundred twenty-seven thousand, two hundred fifty".