133020211220 has 96 divisors (see below), whose sum is σ = 307798299648. Its totient is φ = 47981394432.

The previous prime is 133020211217. The next prime is 133020211223. The reversal of 133020211220 is 22112020331.

It is an interprime number because it is at equal distance from previous prime (133020211217) and next prime (133020211223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133020211223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6796769 + ... + 6816311.

It is an arithmetic number, because the mean of its divisors is an integer number (3206232288).

Almost surely, 2^133020211220 is an apocalyptic number.

133020211220 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 133020211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153899149824).

133020211220 is an abundant number, since it is smaller than the sum of its proper divisors (174778088428).

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

133020211220 is a wasteful number, since it uses less digits than its factorization.

133020211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20169 (or 20167 counting only the distinct ones).

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

Adding to 133020211220 its reverse (22112020331), we get a palindrome (155132231551).

The spelling of 133020211220 in words is "one hundred thirty-three billion, twenty million, two hundred eleven thousand, two hundred twenty".