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21231030011300 = 2252285287744199
BaseRepresentation
bin1001101001111001111000…
…00000001000010110100100
32210011122222222121111212222
410310330330000020112210
510240322122140330200
6113053222303331512
74320614500331114
oct464747400102644
983148888544788
1021231030011300
116846035a4996a
12246a870bb0b98
13bb010147ab75
14535831911044
1526c403d08d85
hex134f3c0085a4

21231030011300 has 36 divisors (see below), whose sum is σ = 46071558523200. Its totient is φ = 8492370825120.

The previous prime is 21231030011297. The next prime is 21231030011327. The reversal of 21231030011300 is 311003013212.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28156601 + ... + 28900799.

Almost surely, 221231030011300 is an apocalyptic number.

21231030011300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21231030011300 is an abundant number, since it is smaller than the sum of its proper divisors (24840528511900).

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

21231030011300 is a wasteful number, since it uses less digits than its factorization.

21231030011300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029500 (or 1029493 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21231030011300 its reverse (311003013212), we get a palindrome (21542033024512).

The spelling of 21231030011300 in words is "twenty-one trillion, two hundred thirty-one billion, thirty million, eleven thousand, three hundred".

Divisors: 1 2 4 5 10 20 25 50 100 285287 570574 744199 1141148 1426435 1488398 2852870 2976796 3720995 5705740 7132175 7441990 14264350 14883980 18604975 28528700 37209950 74419900 212310300113 424620600226 849241200452 1061551500565 2123103001130 4246206002260 5307757502825 10615515005650 21231030011300