1223261974900 has 216 divisors, whose sum is σ = 3147267312000. Its totient is φ = 411395846400.

The previous prime is 1223261974877. The next prime is 1223261974927. The reversal of 1223261974900 is 94791623221.

It is a congruent number.

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 71 ways as a sum of consecutive naturals, for example, 69223266 + ... + 69240934.

It is an arithmetic number, because the mean of its divisors is an integer number (14570682000).

Almost surely, 2^{1223261974900} is an apocalyptic number.

1223261974900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223261974900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1573633656000).

1223261974900 is an abundant number, since it is smaller than the sum of its proper divisors (1924005337100).

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

1223261974900 is a wasteful number, since it uses less digits than its factorization.

1223261974900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17967 (or 17953 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 1223261974900 in words is "one trillion, two hundred twenty-three billion, two hundred sixty-one million, nine hundred seventy-four thousand, nine hundred".