1421195395321 has 9 divisors (see below), whose sum is σ = 1538944340079. Its totient is φ = 1311858366936.

The previous prime is 1421195395297. The next prime is 1421195395453. The reversal of 1421195395321 is 1235935911241.

The square root of 1421195395321 is 1192139.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 210236005225 + 1210959390096 = 458515^2 + 1100436^2 .

It is not a de Polignac number, because 1421195395321 - 2²¹ = 1421193298169 is a prime.

It is a super-2 number, since 2×1421195395321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421195395021) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15451956 + ... + 15543658.

Almost surely, 2^{1421195395321} is an apocalyptic number.

1421195395321 is the 1192139-th square number.

1421195395321 is the 596070-th centered octagonal number.

It is an amenable number.

1421195395321 is a deficient number, since it is larger than the sum of its proper divisors (117748944758).

1421195395321 is an frugal number, since it uses more digits than its factorization.

1421195395321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183432 (or 91716 counting only the distinct ones).

The product of its digits is 291600, while the sum is 46.

The spelling of 1421195395321 in words is "one trillion, four hundred twenty-one billion, one hundred ninety-five million, three hundred ninety-five thousand, three hundred twenty-one".