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21000223150 = 2521153364271
BaseRepresentation
bin10011100011101101…
…011111100110101110
32000012112121212110121
4103203231133212232
5321002024120100
613351455355154
71342255644244
oct234355374656
960175555417
1021000223150
1189a7095525
1240a0b22aba
131c9899255a
141033090794
1582d99351a
hex4e3b5f9ae

21000223150 has 24 divisors (see below), whose sum is σ = 39094399584. Its totient is φ = 8392780800.

The previous prime is 21000223147. The next prime is 21000223159. The reversal of 21000223150 is 5132200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000223159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124486 + ... + 239785.

It is an arithmetic number, because the mean of its divisors is an integer number (1628933316).

Almost surely, 221000223150 is an apocalyptic number.

21000223150 is a deficient number, since it is larger than the sum of its proper divisors (18094176434).

21000223150 is a wasteful number, since it uses less digits than its factorization.

21000223150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365436 (or 365431 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

Adding to 21000223150 its reverse (5132200012), we get a palindrome (26132423162).

The spelling of 21000223150 in words is "twenty-one billion, two hundred twenty-three thousand, one hundred fifty".

Divisors: 1 2 5 10 25 50 1153 2306 5765 11530 28825 57650 364271 728542 1821355 3642710 9106775 18213550 420004463 840008926 2100022315 4200044630 10500111575 21000223150