1344199021 has 4 divisors (see below), whose sum is σ = 1466398944. Its totient is φ = 1221999100.

The previous prime is 1344198997. The next prime is 1344199037. The reversal of 1344199021 is 1209914431.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1209914431 = 11 ⋅109992221.

It is a cyclic number.

It is not a de Polignac number, because 1344199021 - 2¹⁹ = 1343674733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344199081) 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, 61099945 + ... + 61099966.

It is an arithmetic number, because the mean of its divisors is an integer number (366599736).

Almost surely, 2^1344199021 is an apocalyptic number.

1344199021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1344199021 is a deficient number, since it is larger than the sum of its proper divisors (122199923).

1344199021 is a wasteful number, since it uses less digits than its factorization.

1344199021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122199922.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1344199021 is about 36663.3198305882. The cubic root of 1344199021 is about 1103.6241404679.

The spelling of 1344199021 in words is "one billion, three hundred forty-four million, one hundred ninety-nine thousand, twenty-one".