133121332020 has 48 divisors (see below), whose sum is σ = 372758621760. Its totient is φ = 35497222656.

The previous prime is 133121332009. The next prime is 133121332031. The reversal of 133121332020 is 20233121331.

It is an interprime number because it is at equal distance from previous prime (133121332009) and next prime (133121332031).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1487916 + ... + 1574844.

It is an arithmetic number, because the mean of its divisors is an integer number (7765804620).

Almost surely, 2^133121332020 is an apocalyptic number.

133121332020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133121332020 is an abundant number, since it is smaller than the sum of its proper divisors (239637289740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133121332020 is a wasteful number, since it uses less digits than its factorization.

133121332020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112464 (or 112462 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 133121332020 its reverse (20233121331), we get a palindrome (153354453351).

The spelling of 133121332020 in words is "one hundred thirty-three billion, one hundred twenty-one million, three hundred thirty-two thousand, twenty".