1222786737920 has 216 divisors, whose sum is σ = 3240001730112. Its totient is φ = 441808773120.

The previous prime is 1222786737901. The next prime is 1222786737929. The reversal of 1222786737920 is 297376872221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222786737929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24291017 + ... + 24341303.

Almost surely, 2^{1222786737920} is an apocalyptic number.

1222786737920 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 1222786737920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1620000865056).

1222786737920 is an abundant number, since it is smaller than the sum of its proper divisors (2017214992192).

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

1222786737920 is a wasteful number, since it uses less digits than its factorization.

1222786737920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50487 (or 50462 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 56.

The spelling of 1222786737920 in words is "one trillion, two hundred twenty-two billion, seven hundred eighty-six million, seven hundred thirty-seven thousand, nine hundred twenty".