1017212929920 has 768 divisors, whose sum is σ = 4102210344960. Its totient is φ = 238629888000.

The previous prime is 1017212929919. The next prime is 1017212929933. The reversal of 1017212929920 is 299292127101.

1017212929920 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 53022730 + ... + 53041910.

It is an arithmetic number, because the mean of its divisors is an integer number (5341419720).

Almost surely, 2^{1017212929920} is an apocalyptic number.

1017212929920 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 1017212929920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2051105172480).

1017212929920 is an abundant number, since it is smaller than the sum of its proper divisors (3084997415040).

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

1017212929920 is a wasteful number, since it uses less digits than its factorization.

1017212929920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19257 (or 19233 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The spelling of 1017212929920 in words is "one trillion, seventeen billion, two hundred twelve million, nine hundred twenty-nine thousand, nine hundred twenty".