133353051221 has 10 divisors (see below), whose sum is σ = 144465447342. Its totient is φ = 123095097840.

The previous prime is 133353051157. The next prime is 133353051241. The reversal of 133353051221 is 122150353331.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 116356714321 + 16996336900 = 341111^2 + 130370^2 .

It is not a de Polignac number, because 133353051221 - 2⁶ = 133353051157 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 (133353051241) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2305970 + ... + 2363091.

Almost surely, 2^133353051221 is an apocalyptic number.

It is an amenable number.

133353051221 is a deficient number, since it is larger than the sum of its proper divisors (11112396121).

133353051221 is an frugal number, since it uses more digits than its factorization.

133353051221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4669113 (or 4669074 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 29.

The spelling of 133353051221 in words is "one hundred thirty-three billion, three hundred fifty-three million, fifty-one thousand, two hundred twenty-one".