133012031021 has 4 divisors (see below), whose sum is σ = 136105334112. Its totient is φ = 129918727932.

The previous prime is 133012031003. The next prime is 133012031027. The reversal of 133012031021 is 120130210331.

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 a de Polignac number, because none of the positive numbers 2^k-133012031021 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 (133012031027) 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, 1546651481 + ... + 1546651566.

It is an arithmetic number, because the mean of its divisors is an integer number (34026333528).

Almost surely, 2^133012031021 is an apocalyptic number.

It is an amenable number.

133012031021 is a deficient number, since it is larger than the sum of its proper divisors (3093303091).

133012031021 is an equidigital number, since it uses as much as digits as its factorization.

133012031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3093303090.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 133012031021 its reverse (120130210331), we get a palindrome (253142241352).

The spelling of 133012031021 in words is "one hundred thirty-three billion, twelve million, thirty-one thousand, twenty-one".