1337087221 has 4 divisors (see below), whose sum is σ = 1395221472. Its totient is φ = 1278952972.

The previous prime is 1337087189. The next prime is 1337087239. The reversal of 1337087221 is 1227807331.

It is a happy number.

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: 1227807331 = 71 ⋅17293061.

It is a cyclic number.

It is not a de Polignac number, because 1337087221 - 2⁵ = 1337087189 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 (1337087251) 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, 29067091 + ... + 29067136.

It is an arithmetic number, because the mean of its divisors is an integer number (348805368).

Almost surely, 2^1337087221 is an apocalyptic number.

It is an amenable number.

1337087221 is a deficient number, since it is larger than the sum of its proper divisors (58134251).

1337087221 is an equidigital number, since it uses as much as digits as its factorization.

1337087221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58134250.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 1337087221 is about 36566.2032620287. The cubic root of 1337087221 is about 1101.6743704413.

The spelling of 1337087221 in words is "one billion, three hundred thirty-seven million, eighty-seven thousand, two hundred twenty-one".