1226793889020 has 576 divisors, whose sum is σ = 4363581874176. Its totient is φ = 255978455040.

The previous prime is 1226793889019. The next prime is 1226793889031. The reversal of 1226793889020 is 209883976221.

It is a happy number.

It is a super-2 number, since 2×1226793889020² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 153020052 + ... + 153028068.

It is an arithmetic number, because the mean of its divisors is an integer number (7575662976).

Almost surely, 2^{1226793889020} is an apocalyptic number.

1226793889020 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 1226793889020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2181790937088).

1226793889020 is an abundant number, since it is smaller than the sum of its proper divisors (3136787985156).

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

1226793889020 is a wasteful number, since it uses less digits than its factorization.

1226793889020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8170 (or 8161 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 1226793889020 in words is "one trillion, two hundred twenty-six billion, seven hundred ninety-three million, eight hundred eighty-nine thousand, twenty".