1221830974014 has 16 divisors (see below), whose sum is σ = 2792756512128. Its totient is φ = 349094563992.

The previous prime is 1221830973967. The next prime is 1221830974033. The reversal of 1221830974014 is 4104790381221.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 29091213667 = 1221830974014 / (1 + 2 + 2 + 1 + 8 + 3 + 0 + 9 + 7 + 4 + 0 + 1 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14545606792 + ... + 14545606875.

It is an arithmetic number, because the mean of its divisors is an integer number (174547282008).

Almost surely, 2^{1221830974014} is an apocalyptic number.

1221830974014 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1221830974014 is an abundant number, since it is smaller than the sum of its proper divisors (1570925538114).

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

1221830974014 is a wasteful number, since it uses less digits than its factorization.

1221830974014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29091213679.

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 1221830974014 in words is "one trillion, two hundred twenty-one billion, eight hundred thirty million, nine hundred seventy-four thousand, fourteen".