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21103334004 = 22311091585763
BaseRepresentation
bin10011101001110110…
…110101001001110100
32000110201122102222010
4103221312311021310
5321204423142004
613410021404220
71344650244054
oct235166651164
960421572863
1021103334004
118a4a311205
12410b569670
131cb4154cac
141042a51564
15837a5ea89
hex4e9db5274

21103334004 has 24 divisors (see below), whose sum is σ = 49285545120. Its totient is φ = 7028097184.

The previous prime is 21103333981. The next prime is 21103334009. The reversal of 21103334004 is 40043330112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103334009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779574 + ... + 806189.

It is an arithmetic number, because the mean of its divisors is an integer number (2053564380).

Almost surely, 221103334004 is an apocalyptic number.

It is an amenable number.

21103334004 is an abundant number, since it is smaller than the sum of its proper divisors (28182211116).

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

21103334004 is a wasteful number, since it uses less digits than its factorization.

21103334004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586879 (or 1586877 counting only the distinct ones).

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

Adding to 21103334004 its reverse (40043330112), we get a palindrome (61146664116).

The spelling of 21103334004 in words is "twenty-one billion, one hundred three million, three hundred thirty-four thousand, four".

Divisors: 1 2 3 4 6 12 1109 2218 3327 4436 6654 13308 1585763 3171526 4757289 6343052 9514578 19029156 1758611167 3517222334 5275833501 7034444668 10551667002 21103334004