133210220021 has 4 divisors (see below), whose sum is σ = 134503523232. Its totient is φ = 131916916812.

The previous prime is 133210219973. The next prime is 133210220041. The reversal of 133210220021 is 120022012331.

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.

It is a cyclic number.

It is not a de Polignac number, because 133210220021 - 2⁶ = 133210219957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133210220041) 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, 646651451 + ... + 646651656.

It is an arithmetic number, because the mean of its divisors is an integer number (33625880808).

Almost surely, 2^133210220021 is an apocalyptic number.

It is an amenable number.

133210220021 is a deficient number, since it is larger than the sum of its proper divisors (1293303211).

133210220021 is a wasteful number, since it uses less digits than its factorization.

133210220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293303210.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 133210220021 its reverse (120022012331), we get a palindrome (253232232352).

The spelling of 133210220021 in words is "one hundred thirty-three billion, two hundred ten million, two hundred twenty thousand, twenty-one".