Search a number
BaseRepresentation
bin10010101111111110…
…010111111111111100
31220222001100102010010
4102233332113333330
5312212322430322
613125411343220
71311616105320
oct225776277774
956861312103
1020132233212
1185a1136873
123a9a2b1b10
131b8abc5a40
14d8daa7980
157cc68b20c
hex4aff97ffc

20132233212 has 96 divisors (see below), whose sum is σ = 58411988992. Its totient is φ = 5254834176.

The previous prime is 20132233193. The next prime is 20132233213. The reversal of 20132233212 is 21233223102.

Adding to 20132233212 its reverse (21233223102), we get a palindrome (41365456314).

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20132233213) 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, 10893 + ... + 200955.

Almost surely, 220132233212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20132233212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29205994496).

20132233212 is an abundant number, since it is smaller than the sum of its proper divisors (38279755780).

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

20132233212 is a wasteful number, since it uses less digits than its factorization.

20132233212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190187 (or 190185 counting only the distinct ones).

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

The spelling of 20132233212 in words is "twenty billion, one hundred thirty-two million, two hundred thirty-three thousand, two hundred twelve".