1229512297340 has 24 divisors (see below), whose sum is σ = 2583752881920. Its totient is φ = 491466431808.

The previous prime is 1229512297339. The next prime is 1229512297357. The reversal of 1229512297340 is 437922159221.

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, 21125660 + ... + 21183779.

It is an arithmetic number, because the mean of its divisors is an integer number (107656370080).

Almost surely, 2^{1229512297340} is an apocalyptic number.

1229512297340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1229512297340 is an abundant number, since it is smaller than the sum of its proper divisors (1354240584580).

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

1229512297340 is a wasteful number, since it uses less digits than its factorization.

1229512297340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42310901 (or 42310899 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 1229512297340 in words is "one trillion, two hundred twenty-nine billion, five hundred twelve million, two hundred ninety-seven thousand, three hundred forty".