1344650121221 has 4 divisors (see below), whose sum is σ = 1466891041344. Its totient is φ = 1222409201100.

The previous prime is 1344650121091. The next prime is 1344650121229. The reversal of 1344650121221 is 1221210564431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1344650121221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344650121229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61120460045 + ... + 61120460066.

It is an arithmetic number, because the mean of its divisors is an integer number (366722760336).

Almost surely, 2^{1344650121221} is an apocalyptic number.

1344650121221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1344650121221 is a deficient number, since it is larger than the sum of its proper divisors (122240920123).

1344650121221 is a wasteful number, since it uses less digits than its factorization.

1344650121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122240920122.

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 1344650121221 its reverse (1221210564431), we get a palindrome (2565860685652).

The spelling of 1344650121221 in words is "one trillion, three hundred forty-four billion, six hundred fifty million, one hundred twenty-one thousand, two hundred twenty-one".