133021252220 has 24 divisors (see below), whose sum is σ = 279383093808. Its totient is φ = 53201174400.

The previous prime is 133021252219. The next prime is 133021252271. The reversal of 133021252220 is 22252120331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307826 + ... + 600665.

It is an arithmetic number, because the mean of its divisors is an integer number (11640962242).

Almost surely, 2^133021252220 is an apocalyptic number.

133021252220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133021252220 is an abundant number, since it is smaller than the sum of its proper divisors (146361841588).

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

133021252220 is a wasteful number, since it uses less digits than its factorization.

133021252220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915821 (or 915819 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 133021252220 its reverse (22252120331), we get a palindrome (155273372551).

The spelling of 133021252220 in words is "one hundred thirty-three billion, twenty-one million, two hundred fifty-two thousand, two hundred twenty".