1342201221 has 24 divisors (see below), whose sum is σ = 2073126744. Its totient is φ = 833817600.

The previous prime is 1342201219. The next prime is 1342201283. The reversal of 1342201221 is 1221022431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 644448996 + 697752225 = 25386^2 + 26415^2 .

It is not a de Polignac number, because 1342201221 - 2¹ = 1342201219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1342201194 and 1342201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342202221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27976 + ... + 58881.

It is an arithmetic number, because the mean of its divisors is an integer number (86380281).

Almost surely, 2^1342201221 is an apocalyptic number.

It is an amenable number.

1342201221 is a deficient number, since it is larger than the sum of its proper divisors (730925523).

1342201221 is a wasteful number, since it uses less digits than its factorization.

1342201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86981 (or 86978 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1342201221 is about 36636.0644856950. The cubic root of 1342201221 is about 1103.0771199071.

Adding to 1342201221 its reverse (1221022431), we get a palindrome (2563223652).

The spelling of 1342201221 in words is "one billion, three hundred forty-two million, two hundred one thousand, two hundred twenty-one".