1229421473280 has 1600 divisors, whose sum is σ = 5913254527488. Its totient is φ = 235773296640.

The previous prime is 1229421473249. The next prime is 1229421473299. The reversal of 1229421473280 is 823741249221.

1229421473280 is a `hidden beast` number, since 1 + 2 + 2 + 94 + 214 + 73 + 280 = 666.

It is a super-2 number, since 2×1229421473280² (a number of 25 digits) contains 22 as substring.

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 159 ways as a sum of consecutive naturals, for example, 207564399 + ... + 207570321.

Almost surely, 2^{1229421473280} is an apocalyptic number.

1229421473280 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 1229421473280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2956627263744).

1229421473280 is an abundant number, since it is smaller than the sum of its proper divisors (4683833054208).

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

1229421473280 is a wasteful number, since it uses less digits than its factorization.

1229421473280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5989 (or 5964 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 1229421473280 in words is "one trillion, two hundred twenty-nine billion, four hundred twenty-one million, four hundred seventy-three thousand, two hundred eighty".