1020133232220 has 144 divisors (see below), whose sum is σ = 2971058033664. Its totient is φ = 261514512000.

The previous prime is 1020133232201. The next prime is 1020133232267. The reversal of 1020133232220 is 222323310201.

It is a happy number.

It is a super-2 number, since 2×1020133232220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8648077 + ... + 8765243.

It is an arithmetic number, because the mean of its divisors is an integer number (20632347456).

Almost surely, 2^{1020133232220} is an apocalyptic number.

1020133232220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020133232220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1485529016832).

1020133232220 is an abundant number, since it is smaller than the sum of its proper divisors (1950924801444).

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

1020133232220 is a wasteful number, since it uses less digits than its factorization.

1020133232220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117392 (or 117359 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1020133232220 its reverse (222323310201), we get a palindrome (1242456542421).

The spelling of 1020133232220 in words is "one trillion, twenty billion, one hundred thirty-three million, two hundred thirty-two thousand, two hundred twenty".